// JavaScript Document
function validateEnquiry()
{var doc = document.frmContact
	if(doc.name.value=='')
	{
		alert('please enter your name');
	}
	else
	{
		if(doc.email.value=='')
		{
			alert('please enter your email address');
		}
		else
		{
			var enemail = emailCheck(doc.email.value,'email address');
			if(enemail)
			{
				alert(enemail);
			}
			else doc.submit();
		}
	}
}

function emailCheck (emailStr,fieldVal) {
var errStr = "";
var checkTLD=1;
var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
var emailPat=/^(.+)@(.+)$/;
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) {
errStr = fieldVal+" seems incorrect (check @ and .'s)"
return errStr;
}
var user=matchArray[1];
var domain=matchArray[2];
for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
errStr = "The username contains invalid characters in "+fieldVal
return errStr;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
errStr = "The domain name contains invalid characters in "+fieldVal
return errStr;
   }
}
if (user.match(userPat)==null) {
errStr = "The username doesn't seem to be valid in "+fieldVal
return errStr;
}
var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {
for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
errStr = "Destination IP address is invalid in "+fieldVal
return errStr;
   }
}
return true;
}
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
if (domArr[i].search(atomPat)==-1) {
errStr = "The domain name does not seem to be valid in "+fieldVal
return errStr;
   }
}
if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) {
errStr = "The address must end in a well-known domain or two letter " + "country in "+fieldVal
return errStr;
}

if (len<2) {
errStr = "This address is missing a hostname in "+fieldVal
return errStr;
}

errStr = ""
return errStr;
}