function ckFld(fname,fld,message){
	if (document.forms[fname].elements[fld].value=='') {
		if (document.getElementById) {
			var em = document.getElementById("errortxt");
			em.innerHTML = "Please enter your <span>"+message+"</span> below to continue.";
		} else {
			alert("Please enter your "+message+".");
		}
		document.forms[fname].elements[fld].focus();
		return false;
	}
	else {
		if (document.getElementById) {
			var em = document.getElementById("errortxt");
			em.innerHTML = "";
		}
		return true;
	}
}
function ckEmail (emailStr,whiemail) {
	if (emailStr==null||emailStr=="") {
		alert("Please enter your "+whiemail+"e-mail address.");
		return false;
	}
	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 +")*$");
	var matchArray=emailStr.match(emailPat);
	if (matchArray==null) {
		alert("Your "+whiemail+"e-mail address seems incorrect (check @ and .'s)");
		return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];
	for (i=0; i<user.length; i++) {
		if (user.charCodeAt(i)>127) {
			alert("Your "+whiemail+"e-mail username contains characters that our system does not allow.");
			return false;
		}
	}
	for (i=0; i<domain.length; i++) {
		if (domain.charCodeAt(i)>127) {
			alert("Your "+whiemail+"e-mail domain name contains characters that our system does not allow.");
			return false;
		}
	}
	if (user.match(userPat)==null) {
		alert("Your "+whiemail+"e-mail username is formatted incorrectly or contains characters that our system does not allow.");
		return false;
	}
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
		for (var i=1;i<=4;i++) {
			if (IPArray[i]>255) {
				alert("Your "+whiemail+"e-mail destination IP address is invalid.");
				return false;
			}
		}
		return true;
	}
	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++) {
		if (domArr[i].search(atomPat)==-1) {
			alert("Your "+whiemail+"e-mail domain name does not seem to be valid.");
			return false;
		}
	}
	if (checkTLD && domArr[domArr.length-1].length!=2 && domArr[domArr.length-1].search(knownDomsPat)==-1) {
		alert("Please check the last part of your "+whiemail+"e-mail address.\n\nThe address must end in a well known domain or two letter country.");
		return false;
	}
	if (len<2) {
		alert("Your "+whiemail+"e-mail address is missing a hostname!");
		return false;
	}
	return true;
}

function ckAll() {
	if (ckFld(0,'name','Your Name')) {
		if (ckEmail(document.forms[0].email.value,"")) return true;
		else return false;
	}
	else return false;
}