function checkData()
{
// filter to validate email address
// this makes sure that the email address has a "@" symbol
// this makes sure that the email address has a "." after @ and the end is three/two letter work (e.g. .com, .jp, .org etc)
var filter= /^(\w|\-|\.)*[a-zA-Z0-9]+(\w|\-|\.)*@[a-zA-Z0-9]+([a-zA-Z0-9]|\-|\.)*\.[a-zA-Z]{2,6}$/;

	if(document.form1.interest.value=="")
	{
		alert ("Please select your interest from the drop down.");
		document.form1.interest.focus();
		return false;
	}
	if(isBlank(document.form1.name.value))
	{
		alert ("Please enter your name.");
		document.form1.name.focus();
		return false;
	}
	if(isBlank(document.form1.email.value))
	{
		alert ("Please enter your email.");
		document.form1.email.focus();
		return false;
	}
	if(!filter.test(document.form1.email.value))
	{
		var pattern;
		pattern = /^(\w|\-|\.)*[a-zA-Z0-9]+(\w|\-|\.)*@[a-zA-Z0-9]+([a-zA-Z0-9]|\-|\.)*\.[a-zA-Z]{2,6}$/;
		if(!pattern.test(document.form1.email.value))
		{
			alert ("Invalid format for email address");
			document.form1.email.focus();
			return false;		
		}
	}
	if(isBlank(document.form1.cemail.value))
	{
		alert ("Please confirm your email.");
		document.form1.cemail.focus();
		return false;
	}
	if(!filter.test(document.form1.cemail.value))
	{
		var pattern;
		pattern = /^(\w|\-|\.)*[a-zA-Z0-9]+(\w|\-|\.)*@[a-zA-Z0-9]+([a-zA-Z0-9]|\-|\.)*\.[a-zA-Z]{2,6}$/;
		if(!pattern.test(document.form1.cemail.value))
		{
			alert ("Please make sure your e-mail address is correct.");
			document.form1.cemail.focus();
			return false;		
		}
	}
	if(document.form1.cemail.value != document.form1.email.value)
	{
			alert("Please make sure your e-mail address is correct.");
			document.form1.cemail.focus();
			return false;					
	}

	if(isBlank(document.form1.message.value))
	{
		alert ("Please enter comments.");
		document.form1.message.focus();
		return false;
	}
	return true;
}
	
function isBlank(s)
{
	var len=s.length;
	var i;
	for (i=0;i<len;i++)
	{
		 if (s.charAt(i)!=" ") return (false);
	}
	return (true);
}