<!--
function _CF_onError(form_object, input_object, object_value, error_message)
    {
	alert(error_message);
       	return false;	
    }

function _CF_hasValue(obj, obj_type)
    {
    if (obj_type == "TEXT" || obj_type == "PASSWORD")
	{
    	if (obj.value.length == 0) 
      		return false;
    	else 
      		return true;
    	}
	else if (obj_type == "POSITIVE_INT" )
	{
    	if (obj.value.length == 0) 
      		return false;
    	else if (!(obj.value > 0)) 
			return false;
		else		
      		return true;
    	}
    else if (obj_type == "SELECT")
	{
        for (i=0; i < obj.length; i++)
	    	{
		if (obj.options[i].selected)
			return true;
		}

       	return false;	
	}
    else if (obj_type == "SINGLE_VALUE_RADIO" || obj_type == "SINGLE_VALUE_CHECKBOX")
	{

		if (obj.checked)
			return true;
		else
       		return false;	
	}
    else if (obj_type == "RADIO" || obj_type == "CHECKBOX")
	{

        for (i=0; i < obj.length; i++)
	    	{
		if (obj[i].checked)
			return true;
		}
		return false;	
	}
	}

function _CF_checkdate(object_value)
	{
	//Returns true if value is a eurodate format or UK format or US format or is NULL 
    //otherwise returns false	
	if (!_CF_checkEUROdate(object_value))
		{if (!_CF_checkUKdate(object_value))
			{if (!_CF_checkUSdate(object_value))
				{return false;}
			}
		}			
	return true;
	}
	
function _CF_checkEUROdate(object_value)
    {
    //Returns true if value is a eurodate format or is NULL
    //otherwise returns false	
	if (object_value.length == 0)
        return true;

    //Returns true if value is a date in the dd-mm-yyyy format
	isplit = object_value.indexOf('-');
	if (isplit == -1 || isplit == object_value.length)
		return false;

    sDay = object_value.substring(0, isplit);

	monthSplit = isplit + 1;

	isplit = object_value.indexOf('-', monthSplit);

	if (isplit == -1 ||  (isplit + 1 )  == object_value.length)
		return false;

    sMonth = object_value.substring((sDay.length + 1), isplit);

	sYear = object_value.substring(isplit + 1);

	if (!_CF_checkinteger(sMonth)) //check month
		return false;
	else
	if (!_CF_checkrange(sMonth, 1, 12)) // check month
		return false;
	else
	if (!_CF_checkinteger(sYear)) //check year
		return false;
	else
	if (!_CF_checkrange(sYear, 1700, 3000)) //check year
		return false;
	else
	if (!_CF_checkinteger(sDay)) //check day
		return false;
	else
	if (!_CF_checkday(sYear, sMonth, sDay)) //check day
		return false;
	else
		return true;
    }

function _CF_checkEuroDate2(object_value)
    {
    //Returns true if value is a eurodate format or is NULL
    //otherwise returns false	
	// Omformer skille tegn med -
	if (object_value.length == 0)
        return true;

    //Returns true if value is a date in the dd-mm-yyyy format
	v= object_value;
	v=v.replace('/', '-');
    v=v.replace('.', '-');
	v=v.replace(',', '-');
	v=v.replace(' ', '-');
	object_value=v;
	isplit = object_value.indexOf('-');
	if (isplit == -1 || isplit == object_value.length)
		return false;

    sDay = object_value.substring(0, isplit);

	monthSplit = isplit + 1;

	isplit = object_value.indexOf('-', monthSplit);

	if (isplit == -1 ||  (isplit + 1 )  == object_value.length)
		return false;

    sMonth = object_value.substring((sDay.length + 1), isplit);

	sYear = object_value.substring(isplit + 1);

	if (!_CF_checkinteger(sMonth)) //check month
		return false;
	else
	if (!_CF_checkrange(sMonth, 1, 12)) // check month
		return false;
	else
	if (!_CF_checkinteger(sYear)) //check year
		return false;
	else
	if (!_CF_checkrange(sYear, 1700, 3000)) //check year
		return false;
	else
	if (!_CF_checkinteger(sDay)) //check day
		return false;
	else
	if (!_CF_checkday(sYear, sMonth, sDay)) //check day
		return false;
	else
		return true;
    }
	
	
	
function _CF_checkUKdate(object_value)
    {
    //Returns true if value is a eurodate format or is NULL
    //otherwise returns false	

    if (object_value.length == 0)
        return true;

    //Returns true if value is a date in the dd/mm/yyyy format
	isplit = object_value.indexOf('/');
	if (isplit == -1 || isplit == object_value.length)
		return false;

    sDay = object_value.substring(0, isplit);

	monthSplit = isplit + 1;

	isplit = object_value.indexOf('/', monthSplit);

	if (isplit == -1 ||  (isplit + 1 )  == object_value.length)
		return false;

    sMonth = object_value.substring((sDay.length + 1), isplit);

	sYear = object_value.substring(isplit + 1);

	if (!_CF_checkinteger(sMonth)) //check month
		return false;
	else
	if (!_CF_checkrange(sMonth, 1, 12)) // check month
		return false;
	else
	if (!_CF_checkinteger(sYear)) //check year
		return false;
	else
	if (!_CF_checkrange(sYear, 1700, 3000)) //check year
		return false;
	else
	if (!_CF_checkinteger(sDay)) //check day
		return false;
	else
	if (!_CF_checkday(sYear, sMonth, sDay)) //check day
		return false;
	else
		return true;
    }
	
	
function _CF_checkUSdate(object_value)
    {
    //Returns true if value is a date format or is NULL
    //otherwise returns false	

    if (object_value.length == 0)
        return true;

    //Returns true if value is a date in the mm/dd/yyyy format
	isplit = object_value.indexOf('/');

	if (isplit == -1 || isplit == object_value.length)
		return false;

    sMonth = object_value.substring(0, isplit);

	if (sMonth.length == 0)
        return false;

	isplit = object_value.indexOf('/', isplit + 1);

	if (isplit == -1 || (isplit + 1 ) == object_value.length)
		return false;

    sDay = object_value.substring((sMonth.length + 1), isplit);

	if (sDay.length == 0)
        return false;

	sYear = object_value.substring(isplit + 1);

	if (!_CF_checkinteger(sMonth)) //check month
		return false;
	else
	if (!_CF_checkrange(sMonth, 1, 12)) //check month
		return false;
	else
	if (!_CF_checkinteger(sYear)) //check year
		return false;
	else
	if (!_CF_checkrange(sYear, 1700, 3000)) //check year
		return false;
	else
	if (!_CF_checkinteger(sDay)) //check day
		return false;
	else
	if (!_CF_checkday(sYear, sMonth, sDay)) // check day
		return false;
	else
		return true;
    }



function _CF_checkday(checkYear, checkMonth, checkDay)
    {

	maxDay = 31;

	if (checkMonth == 4 || checkMonth == 6 ||
			checkMonth == 9 || checkMonth == 11)
		maxDay = 30;
	else
	if (checkMonth == 2)
	{
		if (checkYear % 4 > 0)
			maxDay =28;
		else
		if (checkYear % 100 == 0 && checkYear % 400 > 0)
			maxDay = 28;
		else
			maxDay = 29;
	}

	return _CF_checkrange(checkDay, 1, maxDay); //check day
    }



function _CF_checkinteger(object_value)
    {
    //Returns true if value is a number or is NULL
    //otherwise returns false	

    if (object_value.length == 0)
        return true;

    //Returns true if value is an integer defined as
    //   having an optional leading + or -.
    //   otherwise containing only the characters 0-9.
	var decimal_format = ".";
	var check_char;

    //The first character can be + -  blank or a digit.
	check_char = object_value.indexOf(decimal_format)
    //Was it a decimal?
    if (check_char < 1)
	return _CF_checknumber(object_value);
    else
	return false;
    }



function _CF_numberrange(object_value, min_value, max_value)
    {
    // check minimum
    if (min_value != null)
	{
        if (object_value < min_value)
		return false;
	}

    // check maximum
    if (max_value != null)
	{
	if (object_value > max_value)
		return false;
	}
	
    //All tests passed, so...
    return true;
    }



function _CF_checknumber(object_value)
    {
    //Returns true if value is a number or is NULL
    //otherwise returns false	

    if (object_value.length == 0)
        return true;

    //Returns true if value is a number defined as
    //   having an optional leading + or -.
    //   having at most 1 decimal point.
    //   otherwise containing only the characters 0-9.
	var start_format = " ,.+-0123456789";
	var number_format = " ,.0123456789";
	var check_char;
	var decimal = false;
	var trailing_blank = false;
	var digits = false;

    //The first character can be + - .  blank or a digit.
	check_char = start_format.indexOf(object_value.charAt(0))
    //Was it a decimal?
	if (check_char == 1)
	    decimal = true;
	else if (check_char < 1)
		return false;
        
	//Remaining characters can be only . or a digit, but only one decimal.
	for (var i = 1; i < object_value.length; i++)
	{
		check_char = number_format.indexOf(object_value.charAt(i))
		if (check_char < 0)
			return false;
		else if (check_char == 1)
		{
			if (decimal)		// Second decimal.
				return false;
			else
				decimal = true;
		}
		else if (check_char == 0)
		{
			if (decimal || digits)	
				trailing_blank = true;
        // ignore leading blanks

		}
	        else if (trailing_blank)
			return false;
		else
			digits = true;
	}	
    //All tests passed, so...
    return true
    }



function _CF_checkrange(object_value, min_value, max_value)
    {
    //if value is in range then return true else return false

    if (object_value.length == 0)
        return true;


    if (!_CF_checknumber(object_value))
	{
	return false;
	}
    else
	{
	return (_CF_numberrange((eval(object_value)), min_value, max_value));
	}
	
    //All tests passed, so...
    return true;
    }

function _CF_checktime(object_value)
    {
    //Returns true if value is in time format or is NULL
    //otherwise returns false	

    if (object_value.length == 0)
        return true;

    //Returns true if value is a date in the mm/dd/yyyy format
	isplit = object_value.indexOf(':');

	if (isplit == -1 || isplit == object_value.length)
		return false;

    sHour = object_value.substring(0, isplit);
	iminute = object_value.indexOf(':', isplit + 1);

	if (iminute == -1 || iminute == object_value.length)
		sMin = object_value.substring((sHour.length + 1));
	else
		sMin = object_value.substring((sHour.length + 1), iminute);

    if (!_CF_checkinteger(sHour)) //check hour
		return false;
    else
    if (!_CF_checkrange(sHour, 0, 23)) //check hour
		return false;

	if (!_CF_checkinteger(sMin)) //check minutes
		return false;
	else
	if (!_CF_checkrange(sMin, 0, 59)) // check minutes
		return false;

	// did they specify seconds
    if (iminute != -1)
	{
		sSec = object_value.substring(iminute + 1);

		if (!_CF_checkinteger(sSec)) //check seconds
			return false;
		else
		if (!_CF_checkrange(sSec, 0, 59)) //check seconds
			return false;	
	}
    
    return true;
    }
    

function isEmail(vValue, vLength) {
	stripValue = vValue.replace(/ /gi, "");
	if( (stripValue.search(/@/gi) < 0) || (stripValue.search(/\./) < 0) || !(stripValue.length >= vLength)) return false;
	else return true;
} 
	
	
<!-- Original: wsabstract.com -->

<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->

function checkrequired(which, pType) {
var pass=true;
var passpw=true;
if (document.images) {
for (i=0;i<which.length;i++) {
var tempobj=which.elements[i];
if (tempobj.name.substring(0,8)=="required") {
if (((tempobj.type=="text"||tempobj.type=="textarea")&&
tempobj.value=='')||(tempobj.type.toString().charAt(0)=="s"&&
tempobj.selectedIndex==0)) {
pass=false;
break;
         }
      }
   }
}

if (pType == 'User')
{ 
pw1 = frmUser.requiredPassword.value;
pw2 = frmUser.requiredConfirmPassword.value;

if (pw1 == ''){
  passpw=false
}

if (pw2 == ''){
  passpw=false
}

if (!passpw) {
alert("Please make sure the password field was properly completed.");
return false;
}

if (pw1 != pw2) {
alert ("\nYou did not enter the same new password twice. Please re-enter your password.")
return false;
}
}

if (!pass) {
shortFieldName=tempobj.name.substring(8,30).toUpperCase();
alert("Please make sure the "+shortFieldName+" field was properly completed.");
return false;
}
else
return true;

}

function clearFormFields(form){
form.reset();

for(i=0; i < form.length; i++){
if(form.elements[i].type == "select-one")
form.elements[i].selectedIndex = 0;
else if (form.elements[i].type == "text"){
form.elements[i].value="";
} // if
} // for

} // method resetFormFields

//-->

function IsSelected(obj,errorText) {
	if(typeof(obj) != 'undefined') {
		if(typeof(obj.length) != 'undefined') {
			for(i=0;i<obj.length;i++) {
				if(obj[i].checked) return true;
			}
			alert(errorText);
			return false;
		}
		else {
			if(obj.checked) return true;
			alert(errorText);
			return false;
		}
	}
	return false;
}