var new_fieldname = "";

function check(form,x)
{
    script_name = "Form Validator ver 2.0";
    action =  "Checks Required, Integer and Date";
    copyright = "(c) 1998 - Art Lubin / Artswork";
    email = "perflunk@aol.com";
    var set_up_var = doall(script_name, copyright, email);
    var message = "";
    var more_message = "";
    var showmsg = "no";
    if (set_up_var == 5872)
    {
        x = x - 1;
        for (var i = 0; i <= x; i++)
            {
                var messenger = form.elements[i].name;
                messenger = messenger.substring(0, 2);
                var fieldname = form.elements[i].name;
                fieldname = fieldname.substring(2);

                    {
                        if (messenger == "r_")
                            {
                                if (form.elements[i].value!=""){
                                    more_message = r_check(form,x,fieldname,i);
                                }
                            }
                        else if (messenger == "c_")
                            {
                                if (form.elements[i].value!=""){
                                    //more_message = c_check(form,x,fieldname,i,false);
                                    more_message = c_check(form,x,fieldname,i,true);        //blanks are allowed with this line
                                    var cctypes = form.elements['validcc'].value
                                    if (more_message==""){  more_message = CheckWithAllowedCardTypes(cctypes,form,x,fieldname,i);   }
                                }
                            }
                        else if (messenger == "C_")
                            {
                                //same as case above but blanks are allowed
                                if (form.elements[i].value!=""){
                                    more_message = c_check(form,x,fieldname,i,true);
                                    var cctypes = form.elements['validcc'].value
                                    if (more_message==""){  more_message = CheckWithAllowedCardTypes(cctypes,form,x,fieldname,i); }
                                }
                            }
                        else if (messenger == "D_")
                            {
                                if (form.elements[i].value!=""){
                                    more_message = D_check(form,x,fieldname,i);
                                }
                            }
                        else if (messenger == "i_")
                            {
                                more_message = i_check(form,x,fieldname,i);
                            }
                        else if (messenger == "d_")
                                {
                                    more_message = d_check(form,x,fieldname,i);
                                }
                        else if (messenger == "e_")
                        {
                                more_message = e_check(form,x,fieldname,i);
                        }
                        else if (messenger == "n_")
                        {
                                more_message = n_check(form, x, fieldname, i);
                        }
                        if (more_message != "")
                        {
                                if (more_message){
                                    if (message == "")
                                    {
                                        message = more_message;
                                        more_message="";
                                    }else{
                                        message = message + "\n" + more_message;
                                        more_message="";
                                    }
                                }
                        }

                        if (message > "")
                                {
                                        showmsg = "yes";
                                }
                        }
                }


        if (showmsg == "yes")
            {
                alert(lang("The following form field(s) were incomplete or incorrect")+":\n\n" + message + "\n\n"+lang("Please complete or correct the form and submit again."));
            }
        else
            {
                submitonce(form);
                form.submit();
            }
        }
    else
        {
            alert ("The copyright information has been changed. \n In order to use this javascript please keep the copyright information intact. \n\n Script Name: Form Validator ver 2.0 \n Copyright: (c) 1998 - Art Lubin / Artswork \n Email: perflunk@aol.com");
        }
}

function isNum(str) {
    // 0.234, .234, 234, 234.234
    regexp = /(^\d+\.?\d*)|(^\d*\.?\d+)/;
    if (regexp.test(str)) return true;
    else return false;
}

function n_check(form, x, fieldname, i) {
    var msg_addition = "";
    error=0;
    for (var y = 0; y <= x; y++) {
        if (form.elements[y].name == fieldname) break;
    }
    var msg_addition = "";
    numberField = form.elements[y].value;
    if(!isNum(numberField)) { error = 1;} else {
        if (numberField.indexOf ('.3') > 1)  error = 1;
    }
    if (error == 1) msg_addition = form.elements[i].value;
    return(msg_addition);
}
function c_check(form,x,fieldname,i,blankallowed){
       /*************************************************************************\
       luhn check
       \*************************************************************************/
        var msg_addition = "";
        error=0;
        for (var y = 0; y <= x; y++){   if (form.elements[y].name == fieldname) break;  }
        var msg_addition = "";
        CardNumber = form.elements[y].value;
        if (CardNumber != ""){
            if (! isNum(CardNumber)) {      error=1;      }
            var  no_digit = CardNumber.length;
            var oddoeven = no_digit & 1;
            var sum = 0;
            if (error==0){
                for (var count = 0; count < no_digit; count++) {
                    var digit = parseInt(CardNumber.charAt(count));
                    if (!((count & 1) ^ oddoeven)) {
                        digit *= 2;
                        if (digit > 9) digit -= 9;
                    }
                    sum += digit;
                }
                if (sum % 10 == 0)  error=0;
                else error=1;
            }
            if (error == 1) msg_addition = form.elements[i].value;
        }else if (!blankallowed) msg_addition = form.elements[i].value;
        return(msg_addition);
}

function D_check(form,x,fieldname,i)
{
    for (var y = 0; y <= x; y++)
    {
            if (form.elements[y].name == fieldname) break;
    }
    var msg_addition = "";

    regexp = /^\w+([\.-]?\w+)*(\.\w{2,3})+$/;
    if (regexp.test(form.elements[y].value))  error = 0;
    else{
         error=1;
    }

    if (error == 1) msg_addition = form.elements[i].value;
    return(msg_addition);
}

function r_check(form,x,fieldname,i)
    {
        var msg_addition = "";
        new_fieldname = fieldname;
        for (var y = 0; y <= x; y++)
            {

                if ((form.elements[y].type == "radio" || form.elements[y].type == "checkbox") && form.elements[y].name == new_fieldname && form.elements[y].checked == true)
                    {
                            msg_addition = "";
                            break;
                    }
                else if ((form.elements[y].type == "radio" || form.elements[y].type == "checkbox") && form.elements[y].name == new_fieldname && form.elements[y].checked == false)
                    {
                        msg_addition = form.elements[i].value;
                    }

            else if (form.elements[y].type == "select-one")
                            {
                                var l = form.elements[y].selectedIndex;
                                if (form.elements[y].name == fieldname && form.elements[y].options[l].value != "")
                                    {
                                        msg_addition = "";
                                        break;
                                    }
                                else if (form.elements[y].name == fieldname && form.elements[y].options[l].value == "")
                                    {

                                        msg_addition = form.elements[i].value;

                                    }
                                }
         else if (form.elements[y].name == fieldname && form.elements[y].value == "" && form.elements[y].type != "radio" && form.elements[y].type != "checkbox" && form.elements[y].type != "select-one")
                            {

                                msg_addition = form.elements[i].value;
                                break;
                            }
                else if (form.elements[y].name == fieldname && form.elements[y].value != "" && form.elements[y].type != "radio" && form.elements[y].type != "checkbox" && form.elements[y].type != "select-one")
                            {
                                msg_addition = "";

                            }
                }
            return(msg_addition);
        }


function i_check(form,x,fieldname,i)
    {
        for (var y = 0; y <= x; y++)
            {
                if (form.elements[y].name == fieldname) break;
            }

    var msg_addition = "";
    var decimal = "";
    inputStr = form.elements[y].value.toString();

    if (inputStr == "")
        {
        }
    else
        {
            for (var c = 0; c < inputStr.length; c++)
                {
                    var oneChar = inputStr.charAt(c);
                    if (c == 0 && oneChar == "-" || oneChar == "."  && decimal == "")
                            {
                                if (oneChar == ".");
                                    {
                                        decimal = "yes";
                                    }
                                continue;

                            }
                                if (oneChar < "0" || oneChar > "9")
                                    {
                                        msg_addition = form.elements[i].value;
                                    }
                }
        }
        return(msg_addition);
    }



    function e_check(form,x,fieldname,i)
    {
                for (var y = 0; y <= x; y++){   if (form.elements[y].name == fieldname) break;  }
                var msg_addition = "";
                regexp = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,6})+$/;

                if (!regexp.test(form.elements[y].value)){
                    msg_addition = form.elements[i].value;
                }

                return(msg_addition);
    }

    function d_check(form,x,fieldname,i)

 {
        for (var y = 0; y <= x; y++)
            {
                if (form.elements[y].name == fieldname) break;
            }

        var msg_addition = "";
        var sDate = form.elements[y].value;
        var int_or_not = isInteger(form.elements[y].value);
        if (int_or_not == "true")
        {
                if ((!(form.elements[y].value.length >= 6)) || (!(form.elements[y].value.length <= 10)))
                {
                        msg_addition = form.elements[i].value;
                }
                else
                {
                     var SlashlPos = form.elements[y].value.indexOf("/",0);
                        if (SlashlPos > 0 && SlashlPos <= 2)
                            {
                                if (SlashlPos == 1)
                                    {
                                        if (form.elements[y].value.charAt(0) < 1 || form.elements[y].value.charAt(0) > 9)
                                            {
                                                msg_addition = form.elements[i].value;
                                            }
                                        else
                                            {
                                                if ((form.elements[y].value.charAt(0) == 1 || form.elements[y].value.charAt(0) == 3 || form.elements[y].value.charAt(0) == 5 || form.elements[y].value.charAt(0) == 7 || form.elements[y].value.charAt(0) == 8) && ((form.elements[y].value.charAt(2) == 0 && form.elements[y].value.charAt(3) == "/") || (form.elements[y].value.charAt(3) == "/" && form.elements[y].value.length >= 7) || (form.elements[y].value.charAt(1) == "/" && form.elements[y].value.charAt(2) == "/")))
                                                    {
                                                        msg_addition = form.elements[i].value;
                                                    }
                                                else if ((form.elements[y].value.charAt(0) == 1 || form.elements[y].value.charAt(0) == 3 || form.elements[y].value.charAt(0) == 5 || form.elements[y].value.charAt(0) == 7 || form.elements[y].value.charAt(0) == 8) && ((form.elements[y].value.charAt(2) >= 3 && form.elements[y].value.charAt(3) > 1) || (form.elements[y].value.charAt(2) == 0 && form.elements[y].value.charAt(3) == 0) || (form.elements[y].value.charAt(1) == "/" && (form.elements[y].value.charAt(3) != "/" && form.elements[y].value.charAt(4) != "/" && form.elements[y].value.charAt(5) != "/" && form.elements[y].value.charAt(6) != "/"))))
                                                    {
                                                        msg_addition = form.elements[i].value + "hi";
                                                    }
                                                else if ((form.elements[y].value.charAt(0) == 1 || form.elements[y].value.charAt(0) == 3 || form.elements[y].value.charAt(0) == 5 || form.elements[y].value.charAt(0) == 7 || form.elements[y].value.charAt(0) == 8) && (((form.elements[y].value.charAt(2) > 3 && form.elements[y].value.charAt(3) != "/") || (((form.elements[y].value.charAt(1) == "/" && form.elements[y].value.charAt(4) == "/")) && ((form.elements[y].value.length == 6 || form.elements[y].value.length == 8)))) || form.elements[y].value.charAt(5) == "/"))
                                                    {
                                                        msg_addition = form.elements[i].value;
                                                    }
                                                else
                                                    {
                                                        if ((form.elements[y].value.charAt(0) == 2 && ((form.elements[y].value.charAt(2) == 0 && form.elements[y].value.charAt(3) == "/") || (form.elements[y].value.charAt(3) == "/" && form.elements[y].value.length >= 7) || (form.elements[y].value.charAt(1) == "/" && form.elements[y].value.charAt(2) == "/") || (form.elements[y].value.charAt(2) == 0 && form.elements[y].value.charAt(3) == 0) || (form.elements[y].value.charAt(1) == "/" && (form.elements[y].value.charAt(3) != "/" && form.elements[y].value.charAt(4) != "/" && form.elements[y].value.charAt(5) != "/" && form.elements[y].value.charAt(6) != "/")))))
                                                            {
                                                                msg_addition = form.elements[i].value;
                                                            }
                                                        else if (form.elements[y].value.charAt(0) == 2 && ((form.elements[y].value.charAt(2) > 2 && form.elements[y].value.charAt(3) != "/") || (((form.elements[y].value.charAt(1) == "/" && form.elements[y].value.charAt(4) == "/") && ((form.elements[y].value.length == 6 || form.elements[y].value.length == 8)))) || form.elements[y].value.charAt(5) == "/"))
                                                            {
                                                                msg_addition = form.elements[i].value;
                                                            }
                                                        else
                                                            {
                                                                if ((form.elements[y].value.charAt(0) == 4 || form.elements[y].value.charAt(0) == 6 || form.elements[y].value.charAt(0) == 9) && ((form.elements[y].value.charAt(2) == 0 && form.elements[y].value.charAt(3) == "/") || (form.elements[y].value.charAt(3) == "/" && form.elements[y].value.length >= 7) || (form.elements[y].value.charAt(1) == "/" && form.elements[y].value.charAt(2) == "/")))
                                                                    {
                                                                        msg_addition = form.elements[i].value;
                                                                    }
                                                                else if ((form.elements[y].value.charAt(0) == 4 || form.elements[y].value.charAt(0) == 6 || form.elements[y].value.charAt(0) == 9) && ((form.elements[y].value.charAt(2) >= 3 && form.elements[y].value.charAt(3) > 0) || (form.elements[y].value.charAt(2) == 0 && form.elements[y].value.charAt(3) == 0) || (form.elements[y].value.charAt(1) == "/" && (form.elements[y].value.charAt(3) != "/" && form.elements[y].value.charAt(4) != "/" && form.elements[y].value.charAt(5) != "/" && form.elements[y].value.charAt(6) != "/"))))
                                                                    {
                                                                        msg_addition = form.elements[i].value;
                                                                    }
                                                                else if ((form.elements[y].value.charAt(0) == 4 || form.elements[y].value.charAt(0) == 6 || form.elements[y].value.charAt(0) == 9) && (((form.elements[y].value.charAt(2) > 3 && form.elements[y].value.charAt(3) != "/") || ((form.elements[y].value.charAt(1) == "/" && form.elements[y].value.charAt(4) == "/") && ((form.elements[y].value.length == 6 || form.elements[y].value.length == 8)))) || form.elements[y].value.charAt(5) == "/"))
                                                                    {
                                                                        msg_addition = form.elements[i].value;
                                                                    }
                                                            }
                                                    }
                                            }
                                    }
                                else
                                    {
                                        if (form.elements[y].value.charAt(0) > 1 || (form.elements[y].value.charAt(0) == 1 && form.elements[y].value.charAt(1) > 2) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 0))
                                            {
                                                msg_addition = form.elements[i].value;
                                            }
                                        else
                                            {
                                                if (((form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 1) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 3) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 5) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 7) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 8) || (form.elements[y].value.charAt(0) == 1 && form.elements[y].value.charAt(1) == 0) || (form.elements[y].value.charAt(0) == 1 && form.elements[y].value.charAt(1) == 2)) && ((form.elements[y].value.charAt(3) == 0 && form.elements[y].value.charAt(4) == "/") || (form.elements[y].value.charAt(2) == "/" && form.elements[y].value.charAt(3) == "/") || (form.elements[y].value.charAt(2) == "/" && (form.elements[y].value.charAt(4) != "/" && form.elements[y].value.charAt(5) != "/" && form.elements[y].value.charAt(6) != "/" && form.elements[y].value.charAt(7) != "/"))))
                                                    {
                                                        msg_addition = form.elements[i].value;
                                                    }
                                                else if (((form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 1) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 3) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 5) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 7) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 8) || (form.elements[y].value.charAt(0) == 1 && form.elements[y].value.charAt(1) == 0) || (form.elements[y].value.charAt(0) == 1 && form.elements[y].value.charAt(1) == 2)) && ((form.elements[y].value.charAt(3) >= 3 && form.elements[y].value.charAt(4) > 1) || (form.elements[y].value.charAt(3) == 0 && form.elements[y].value.charAt(4) == 0) || form.elements[y].value.length < 7))
                                                    {
                                                        msg_addition = form.elements[i].value;
                                                    }
                                                else if (((form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 1) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 3) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 5) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 7) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 8) || (form.elements[y].value.charAt(0) == 1 && form.elements[y].value.charAt(1) == 0) || (form.elements[y].value.charAt(0) == 1 && form.elements[y].value.charAt(1) == 2)) && ((form.elements[y].value.charAt(3) > 3 && form.elements[y].value.charAt(4) != "/")   || ((form.elements[y].value.charAt(2) == "/" && form.elements[y].value.charAt(5) == "/" && form.elements[y].value.length == 7 || form.elements[y].value.charAt(6) == "/") || (form.elements[y].value.charAt(2) == "/" && form.elements[y].value.charAt(4) == "/" && (form.elements[y].value.length == 6 || form.elements[y].value.length == 8)))))
                                                    {
                                                        msg_addition = form.elements[i].value;
                                                    }
                                                else
                                                    {
                                                        if (((form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 2) && ((form.elements[y].value.charAt(3) == 0 && form.elements[y].value.charAt(4) == "/") || (form.elements[y].value.charAt(3) == 0 && form.elements[y].value.charAt(4) == 0)) || form.elements[y].value.length < 7) || (form.elements[y].value.charAt(2) == "/" && (form.elements[y].value.charAt(4) != "/" && form.elements[y].value.charAt(5) != "/" && form.elements[y].value.charAt(6) != "/" && form.elements[y].value.charAt(7) != "/")))
                                                            {
                                                                msg_addition = form.elements[i].value;
                                                            }
                                                        else if ((form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 2) && ((form.elements[y].value.charAt(3) > 2 && form.elements[y].value.charAt(4) != "/") || ((form.elements[y].value.charAt(2) == "/" && form.elements[y].value.charAt(5) == "/" && form.elements[y].value.length == 7 || form.elements[y].value.charAt(6) == "/") || (form.elements[y].value.charAt(2) == "/" && form.elements[y].value.charAt(4) == "/" && (form.elements[y].value.length == 6 || form.elements[y].value.length == 8)))))
                                                            {
                                                                msg_addition = form.elements[i].value;
                                                            }
                                                        else
                                                            {
                                                                if (((form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 4) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 6) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 9) || (form.elements[y].value.charAt(0) == 1 && form.elements[y].value.charAt(1) == 1)) && ((form.elements[y].value.charAt(3) == 0 && form.elements[y].value.charAt(4) == "/") || (form.elements[y].value.charAt(2) == "/" && form.elements[y].value.charAt(3) == "/") || (form.elements[y].value.charAt(2) == "/" && (form.elements[y].value.charAt(4) != "/" && form.elements[y].value.charAt(5) != "/" && form.elements[y].value.charAt(6) != "/" && form.elements[y].value.charAt(7) != "/"))))
                                                                    {
                                                                        msg_addition = form.elements[i].value;
                                                                    }
                                                                else if (((form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 4) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 6) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 9) || (form.elements[y].value.charAt(0) == 1 && form.elements[y].value.charAt(1) == 1)) && ((form.elements[y].value.charAt(3) >= 3 && form.elements[y].value.charAt(4) > 0) || (form.elements[y].value.charAt(3) == 0 && form.elements[y].value.charAt(4) == 0) || form.elements[y].value.length < 7))
                                                                    {
                                                                        msg_addition = form.elements[i].value;
                                                                    }
                                                                else if (((form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 4) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 6) || (form.elements[y].value.charAt(0) == 0 && form.elements[y].value.charAt(1) == 9) || (form.elements[y].value.charAt(0) == 1 && form.elements[y].value.charAt(1) == 1)) && ((form.elements[y].value.charAt(3) > 3 && form.elements[y].value.charAt(4) != "/") || ((form.elements[y].value.charAt(2) == "/" && form.elements[y].value.charAt(5) == "/" && form.elements[y].value.length == 7 || form.elements[y].value.charAt(6) == "/") || (form.elements[y].value.charAt(2) == "/" && form.elements[y].value.charAt(4) == "/" && (form.elements[y].value.length == 6 || form.elements[y].value.length == 8)))))
                                                                    {
                                                                        msg_addition = form.elements[i].value;
                                                                    }
                                                            }
                                                    }
                                            }
                                    }
                            }
            else
                            {
                                msg_addition = form.elements[i].value;
                            }
                    }
            }
        else
            {
                msg_addition = form.elements[i].value;
            }
        return(msg_addition);
    }

    function isInteger(sDate)
    {
		var new_msg = "true";
		inputStr = sDate.toString();
		for (var i = 0; i < inputStr.length; i++)
			{
			var oneChar = inputStr.charAt(i);
			if ((oneChar < "0" || oneChar > "9") && oneChar != "/")
					{
						new_msg = "false";
					}
			}
		return (new_msg);
    }

    function doall(script_name, copyright, email)
    {
    var code = 0;
    var test = script_name + copyright + email;
    for (var a = 0; a < test.length; a++)
        {
        var each_char = test.charAt(a);
        var x = asc(each_char);
        code += x;
        }
    return (code);
    }

    function asc(each_char)
        {
        var n = 0;
            var char_str = charSetStr();
            for (i = 0; i < char_str.length; i++)
                {
                    if (each_char == char_str.substring(i, i+1))
                        {
                            break;
                        }
                }
            return i + 32;
        }

        function charSetStr()
            {
                var str;
            str = ' !"#$%&' + "'" + '()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~';
                return str;
            }


function CheckWithAllowedCardTypes(cctypes,form,x,fieldname,i){
        var msg_addition = "";
        error=0;
        for (var y = 0; y <= x; y++){   if (form.elements[y].name == fieldname) break;  }
        var msg_addition = "";
        CardNumber = form.elements[y].value;
        visa = isVisa(CardNumber);
        mc = isMasterCard(CardNumber);
        amex = isAmericanExpress(CardNumber);
        disc = isDiscover(CardNumber);
        //c_1000_ = visa
        //c_0100_ = mastercard
        //c_0010_ = americanexpress
        //c_0001_ = discover
        if (visa){
            if (cctypes.substr(0,1)=="0") return lang("Visa is not accepted at this time");
        }else if (mc){
            if (cctypes.substr(1,1)=="0") return lang("MasterCard is not accepted at this time");
        }else if (amex){
            if (cctypes.substr(2,1)=="0") return lang("American Express is not accepted at this time");
        }else if (disc){
            if (cctypes.substr(3,1)=="0") return lang("Discover is not accepted at this time");
        }
}

/*  ================================================================
    FUNCTION:  isVisa()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid VISA number.

          false, otherwise

    Sample number: 4111 1111 1111 1111 (16 digits)
    ================================================================ */

function isVisa(cc)
{
  if (((cc.length == 16) || (cc.length == 13)) &&
      (cc.substring(0,1) == 4))  return true;
  return false;
}  // END FUNCTION isVisa()

/*  ================================================================
    FUNCTION:  isMasterCard()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid MasterCard
            number.

          false, otherwise

    Sample number: 5500 0000 0000 0004 (16 digits)
    ================================================================ */

function isMasterCard(cc)
{
  firstdig = cc.substring(0,1);
  seconddig = cc.substring(1,2);
  if ((cc.length == 16) && (firstdig == 5) &&
      ((seconddig >= 1) && (seconddig <= 5))) return true;
  return false;

} // END FUNCTION isMasterCard()





/*  ================================================================
    FUNCTION:  isAmericanExpress()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid American
            Express number.

          false, otherwise

    Sample number: 340000000000009 (15 digits)
    ================================================================ */

function isAmericanExpress(cc)
{
  firstdig = cc.substring(0,1);
  seconddig = cc.substring(1,2);
  if ((cc.length == 15) && (firstdig == 3) &&
      ((seconddig == 4) || (seconddig == 7))) return true;
  if ((cc.length == 16) && (firstdig == 3) &&
      ((seconddig == 4) || (seconddig == 7))) return true;
  return false;

} // END FUNCTION isAmericanExpress()


/*  ================================================================
    FUNCTION:  isDiscover()

    INPUT:     cc - a string representing a credit card number

    RETURNS:  true, if the credit card number is a valid Discover
            card number.

          false, otherwise

    Sample number: 6011000000000004 (16 digits)
    ================================================================ */

function isDiscover(cc)
{
  first4digs = cc.substring(0,4);
  if ((cc.length == 16) && (first4digs == "6011")) return true;
  return false;

} // END FUNCTION isDiscover()

function move(moveaction,movefrom,moveto)
{
    var moveto = $(moveto);
    if(moveaction == 'remove') {
        for(x = 0;x<($(movefrom).length);x++) {
            if($(movefrom).options[x].selected) {
                with(moveto) {
                    options[options.length] = new Option($(movefrom).options[x].text,$(movefrom).options[x].value);
                }
                $(movefrom).options[x] = null;
                x = -1;
            }
        }
    }
    if(moveaction == 'add') {
        for(x = 0;x<(moveto.length);x++) {
            if(moveto.options[x].selected) {
                with($(movefrom)) {
                    options[options.length] = new Option(moveto.options[x].text,moveto.options[x].value);
                }
                moveto.options[x] = null;
                x = -1;
            }
        }
    }
    return true;
}

function selAll(target)
{
    var target = $(target);
    var targetOptions = target.options;
    var targetLength = targetOptions.length;
    for (var i = 0; i < targetLength; i++) {
        targetOptions[i].selected = true;
    }
}