function emailCheck (emailStr)
	{
		var emailPat=/^(.+)@(.+)$/;
		var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
		var validChars="\[^\\s" + specialChars + "\]";
		var quotedUser="(\"[^\"]*\")";
		var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
		var atom=validChars + '+';
		var word="(" + atom + "|" + quotedUser + ")";
		var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
		var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
		var matchArray=emailStr.match(emailPat);
		if (matchArray==null) 
			{
		alert("Please verify Email Address (check @ and .'s)");
		document.form1.email.focus();

		return(false);
			}
	var user=matchArray[1];
	var domain=matchArray[2];
	if (user.match(userPat)==null) 
	{
    	alert("Please specify a valid username in Email Address!");
    	return(false);
	}
	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);
	}
	var domainArray=domain.match(domainPat);
	if (domainArray==null) 
	{
		alert("Please specify a valid domain name!");
    	return(false);
	}
	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>4)
	{
   		alert("The address must end in a valid domain, or two letter country.");
   		return(false);
	}
	if (len<2) 
	{
   		var errStr="This Email Address is missing a hostname!";
   		alert(errStr);
   		return(false);
	}
	return true;
}

	//=========
	
function validate_contact()
{
	if(document.form1.name.value.match(/[&;<>]+/))
	{
		alert("Please remove invalid characters from Name (e.g. & ; < >)");
		document.form1.name.select();
		document.form1.name.focus();
		return(false);
	}
	else if(document.form1.name.value=='')
	{
		alert("Please specify a Name");
		document.form1.name.select();
		document.form1.name.focus();
		return(false);
	}
	
	if(document.form1.email.value.match(/[&;<>]+/))
	{
		alert("Please remove invalid characters from Email Address (e.g. & ; < >)");
		document.form1.email.select();
		document.form1.email.focus();
		return(false);
	}
	else if(document.form1.email.value=='')
		{
			alert("Please specify Email Address!");
			document.form1.email.focus();
			return(false);
		}
		else
		{	//==============
			if(!document.form1.email.value.match(/[a-zA-Z\.\@\d\_]/)) 
			{
           		alert('Please specify a valid Email Address.');
				document.form1.email.select();
				document.form1.email.focus();
	        	return false;
           	}

			if (!emailCheck (document.form1.email.value) )
			{
				document.form1.email.select();
				document.form1.email.focus();
				return (false);
			}
			
		}	//=================
	if(document.form1.message.value.match(/[&;<>]+/))
	{
		alert("Please remove invalid characters from Comments (e.g. & ; < >)");
		document.form1.message.select();
		document.form1.message.focus();
		return(false);
	}
	else if(document.form1.message.value=='')
	{
		alert("Please specify Comments");
		document.form1.message.select();
		document.form1.message.focus();
		return(false);
	}
		return(true);
	}