function Validate() {
	var VALString;
	var VALArray;
	var VALField;
	var VALErrMessage;
	var ReturnValue = true;

	/////////////////////////////////////
	//Validate Required Text Fields
	/////////////////////////////////////

	//First Check for an array of values
	if (document.forms[0].VALTextRequired) {
		if(document.forms[0].VALTextRequired.length) {
			var idx;
			for (var idx=0;idx < document.forms[0].VALTextRequired.length ;idx++) {
				VALString = document.forms[0].VALTextRequired[idx].value;
				VALArray = VALString.split(",");
				VALField = VALArray[0];
				VALErrMessage = VALArray[1];
				if (!ValidateRequiredText(VALField,VALErrMessage)) {
					ReturnValue = false;
					break;
				}
			}
		}
		else {
			
			VALString = document.forms[0].VALTextRequired.value;
			VALArray = VALString.split(",");
			VALField = VALArray[0];
			VALErrMessage = VALArray[1];
			if (!ValidateRequiredText(VALField,VALErrMessage)) {
				ReturnValue = false;
			}
		}
	}
	
	if(!ReturnValue) {
		return ReturnValue;
	}
	/////////////////////////////////////
	// Validate Required Select Fields
	/////////////////////////////////////

	//First Check for an array of values
	if(document.forms[0].VALSelectRequired) {
		if(document.forms[0].VALSelectRequired.length) {
			var idx;
			for (var idx=0;idx < document.forms[0].VALSelectRequired.length ;idx++) {
				VALString = document.forms[0].VALSelectRequired[idx].value;
				VALArray = VALString.split(",");
				VALField = VALArray[0];
				VALErrMessage = VALArray[1];
				if (!ValidateRequiredSelect(VALField,VALErrMessage)) {
					ReturnValue = false;
					break;
				}
			}
		}
		else {
			VALString = document.forms[0].VALSelectRequired.value;
			VALArray = VALString.split(",");
			VALField = VALArray[0];
			VALErrMessage = VALArray[1];
			if (!ValidateRequiredSelect(VALField,VALErrMessage)) {
				ReturnValue = false;
			}
		}
	}

	if(!ReturnValue) {
		return ReturnValue;
	}

	/////////////////////////////////////
	// Validate Required CheckBox Fields
	/////////////////////////////////////

	//First Check for an array of values
	if(document.forms[0].VALCheckboxRequired) {
		if(document.forms[0].VALCheckboxRequired.length) {
			var idx;
			for (var idx=0;idx < document.forms[0].VALCheckboxRequired.length ;idx++) {
				VALString = document.forms[0].VALCheckboxRequired[idx].value;
				VALArray = VALString.split(",");
				VALField = VALArray[0];
				VALErrMessage = VALArray[1];
				if (!ValidateRequiredCheckbox(VALField,VALErrMessage)) {
					ReturnValue = false;
					break;
				}
			}
		}
		else {
			VALString = document.forms[0].VALCheckboxRequired.value;
			VALArray = VALString.split(",");
			VALField = VALArray[0];
			VALErrMessage = VALArray[1];
			if (!ValidateRequiredCheckbox(VALField,VALErrMessage)) {
				ReturnValue = false;
			}
		}
	}

	if(!ReturnValue) {
		return ReturnValue;
	}

	
	/////////////////////////////////////
	//Validate Valid Date Fields
	/////////////////////////////////////
	
	//First Check for an array of values
	if(document.forms[0].VALValidDate) {
		if(document.forms[0].VALValidDate.length) {
			var idx;
			for (var idx=0;idx < document.forms[0].VALValidDate.length ;idx++) {
				VALString = document.forms[0].VALValidDate[idx].value;
				VALArray = VALString.split(",");
				VALField = VALArray[0];
				VALErrMessage = VALArray[1];
				if (!ValidateValidDate(VALField,VALErrMessage)) {
					ReturnValue = false;
					break;
				}
			}
		}
		else {
			VALString = document.forms[0].VALValidDate.value;
			VALArray = VALString.split(",");
			VALField = VALArray[0];
			VALErrMessage = VALArray[1];
			if (!ValidateValidDate(VALField,VALErrMessage)) {
				ReturnValue = false;
			}
		}
	}

	/////////////////////////////////////
	//Validate Numeric Fields
	/////////////////////////////////////
	
	//First Check for an array of values
	if(document.forms[0].VALValidNumber) {
		if(document.forms[0].VALValidNumber.length) {
			var idx;
			for (var idx=0;idx < document.forms[0].VALValidNumber.length ;idx++) {
				VALString = document.forms[0].VALValidNumber[idx].value;
				VALArray = VALString.split(",");
				VALField = VALArray[0];
				VALErrMessage = VALArray[1];
				if (!ValidateNumeric(VALField,VALErrMessage)) {
					ReturnValue = false;
					break;
				}
			}
		}
		else {
			VALString = document.forms[0].VALValidNumber.value;
			VALArray = VALString.split(",");
			VALField = VALArray[0];
			VALErrMessage = VALArray[1];
			if (!ValidateNumeric(VALField,VALErrMessage)) {
				ReturnValue = false;
			}
		}
	}
	if(!ReturnValue) {
		return ReturnValue;
	}



	/////////////////////////////////////
	//Validate Positive Numeric Fields
	/////////////////////////////////////
	
	//First Check for an array of values
	if(document.forms[0].VALPositiveNumber) {
		if(document.forms[0].VALPositiveNumber.length) {
			var idx;
			for (var idx=0;idx < document.forms[0].VALPositiveNumber.length ;idx++) {
				VALString = document.forms[0].VALPositiveNumber[idx].value;
				VALArray = VALString.split(",");
				VALField = VALArray[0];
				VALErrMessage = VALArray[1];
				if (!ValidateNumericPositive(VALField,VALErrMessage)) {
					ReturnValue = false;
					break;
				}
			}
		}
		else {
			VALString = document.forms[0].VALPositiveNumber.value;
			VALArray = VALString.split(",");
			VALField = VALArray[0];
			VALErrMessage = VALArray[1];
			if (!ValidateNumericPositive(VALField,VALErrMessage)) {
				ReturnValue = false;
			}
		}
	}
	return ReturnValue;
}
				
function ValidateRequiredText(VALField, VALErrMessage) {
	if(eval("document.forms[0]." + VALField + ".value.length") == 0) {
		alert(VALErrMessage);
		eval("document.forms[0]." + VALField + ".focus()");
		
		return false;
	}
	return true;
}

function ValidateRequiredSelect(VALField, VALErrMessage) {
	if(eval("document.forms[0]." + VALField + ".selectedIndex") == 0) {
		alert(VALErrMessage);
		eval("document.forms[0]." + VALField + ".focus()");
		
		return false;
	}
	return true;
}

function ValidateRequiredCheckbox(VALField, VALErrMessage) {
	var oField = eval("document.forms[0]." + VALField);
	var bChecked = false;

	if( eval("document.forms[0]." + VALField + "[0]") ) {
		for(var i=0;i< oField.length; i++) {
			if(oField[i].checked) {
				bChecked = true;
			}
		}
		if(!bChecked)  {
			alert(VALErrMessage);
			eval("document.forms[0]." + VALField + "[0].focus()");
			return false;
		}
	}

	else {
		if(oField.checked) {
			bChecked = true;
		}

		if(!bChecked)  {
			alert(VALErrMessage);
			eval("document.forms[0]." + VALField + ".focus()");
			return false;
		}


	}
	

	return true;
}


function ValidateValidDate(VALField, VALErrMessage) {
	if (eval("document.forms[0]." + VALField + ".value.length") > 0) {
		if (eval("isValidDate(document.forms[0]." + VALField +")")==false) {
			alert(VALErrMessage);
			eval("document.forms[0]." + VALField + ".focus()");
			
			return false;
		}
	}
	return true;
}

function ValidateNumeric(VALField, VALErrMessage) {
	
	if (eval("document.forms[0]." + VALField + ".value.length") > 0) {
		if (eval("isNaN(document.forms[0]." + VALField +".value)")) {
			alert(VALErrMessage);
			eval("document.forms[0]." + VALField + ".focus()");
			return false;
		}
	}
	return true;
}

function ValidateNumericPositive(VALField, VALErrMessage) {
	if (eval("document.forms[0]." + VALField + ".value.length") > 0) {
		if (eval("isNaN(document.forms[0]." + VALField +".value)")) {
			alert(VALErrMessage);
			eval("document.forms[0]." + VALField + ".focus()");
			return false;
		}
	
		if (eval("document.forms[0]." + VALField + ".value") <= 0) {
			alert(VALErrMessage);
			eval("document.forms[0]." + VALField + ".focus()");
			return false;
		}
		
	}
	return true;
}


function isValidDate(datField) {
	var dateStr;
	dateStr = datField.value
	var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{2}|\d{4})$/;
	var matchArray = dateStr.match(datePat); // is the format ok?
	if (matchArray == null) {
		//alert("Date is not in a valid format.")
		datField.value = '';
		return false;
	}
	month = matchArray[1]; // parse date into variables
	day = matchArray[3];
	year = matchArray[4];
	if (month < 1 || month > 12) { // check month range
		//alert("Month must be between 1 and 12.");
		datField.value = '';
		return false;
	}
	if (day < 1 || day > 31) {
		//alert("Day must be between 1 and 31.");
		datField.value = '';
		return false;
	}
	if ((month==4 || month==6 || month==9 || month==11) && day==31) {
		//alert("Month "+ month +" doesn't have 31 days!")
		datField.value = '';
		return false
	}
	if (month == 2) { // check for february 29th
		var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
		if (day>29 || (day==29 && !isleap)) {
			//alert("February " + year + " doesn't have " + day + " days!");
			datField.value = '';
			return false;
		}
	}
	return true;  // date is valid
}




	
function CheckBox (fieldName,idx) {
		var obj;
		if(eval('document.forms[0].' + fieldName + '[' + idx + ']')) {
			obj = eval('document.forms[0].' + fieldName + '[' + idx + ']');
		}
		else {
			obj = eval('document.forms[0].' + fieldName );		
		}
		obj.checked = !obj.checked;
}




function emailCheck(emailStr) 
{
	/* The following pattern is used to check if the entered e-mail address
	   fits the user@domain format.  It also is used to separate the username
	   from the domain. */
	var emailPat=/^(.+)@(.+)$/
	/* The following string represents the pattern for matching all special
	   characters.  We don't want to allow special characters in the address. 
	   These characters include ( ) < > @ , ; : \ " . [ ]    */
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	/* The following string represents the range of characters allowed in a 
	   username or domainname.  It really states which chars aren't allowed. */
	var validChars="\[^\\s" + specialChars + "\]"
	/* The following pattern applies if the "user" is a quoted string (in
	   which case, there are no rules about which characters are allowed
	   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
	   is a legal e-mail address. */
	var quotedUser="(\"[^\"]*\")"
	/* The following pattern applies for domains that are IP addresses,
	   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
	   e-mail address. NOTE: The square brackets are required. */
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
	/* The following string represents an atom (basically a series of
	   non-special characters.) */
	var atom=validChars + '+'
	/* The following string represents one word in the typical username.
	   For example, in john.doe@somewhere.com, john and doe are words.
	   Basically, a word is either an atom or quoted string. */
	var word="(" + atom + "|" + quotedUser + ")"
	// The following pattern describes the structure of the user
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
	/* The following pattern describes the structure of a normal symbolic
	   domain, as opposed to ipDomainPat, shown above. */
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")


	/* Finally, let's start trying to figure out if the supplied address is
	   valid. */

	/* Begin with the coarse pattern to simply break up user@domain into
	   different pieces that are easy to analyze. */
	var matchArray=emailStr.match(emailPat)
	if (matchArray==null) {
	  /* Too many/few @'s or something; basically, this address doesn't
	     even fit the general mould of a valid e-mail address. */
		alert("Email address seems incorrect (check @ and .'s)")
		return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]

	// See if "user" is valid 
	if (user.match(userPat)==null) {
	    // user is not valid
	    alert("The username doesn't seem to be valid.")
	    return false
	}

	/* if the e-mail address is at an IP address (as opposed to a symbolic
	   host name) make sure the IP address is valid. */
	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
	    // this is an IP address
		  for (var i=1;i<=4;i++) {
		    if (IPArray[i]>255) {
		        alert("Destination IP address is invalid!")
			return false
		    }
	    }
	    return true
	}

	// Domain is symbolic name
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		alert("The domain name doesn't seem to be valid.")
	    return false
	}

	/* domain name seems valid, but now make sure that it ends in a
	   three-letter word (like com, edu, gov) or a two-letter word,
	   representing country (uk, nl), and that there's a hostname preceding 
	   the domain or country. */

	/* Now we need to break up the domain to get a count of how many atoms
	   it consists of. */
	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 || 
	    domArr[domArr.length-1].length>3) {
	   // the address must end in a two letter or three letter word.
	   alert("The address must end in a three-letter domain, or two letter country.")
	   return false
	}

	// Make sure there's a host name preceding the domain.
	if (len<2) {
	   var errStr="This address is missing a hostname!"
	   alert(errStr)
	   return false
	}

	// If we've gotten this far, everything's valid!
	return true;
}