function emailCheck(emailStr) {
	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) {
		return "Email address seems incorrect (check @ and .'s)";
	}
	var user=matchArray[1];
	var domain=matchArray[2];
	for (i=0; i<user.length; i++) {
		if (user.charCodeAt(i)>127) {
			return "Ths username contains invalid characters.";
		}
	}
	for (i=0; i<domain.length; i++) {
		if (domain.charCodeAt(i)>127) {
			return "Ths domain name contains invalid characters.";
		}
	}
	if (user.match(userPat)==null) {
		return "The username doesn't seem to be 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) {
				return "Destination IP address is invalid!";
			}
		}
		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) {
			return "The domain name does not seem to be valid.";
		}
	}
	if (checkTLD && domArr[domArr.length-1].length!=2 && 
			domArr[domArr.length-1].search(knownDomsPat)==-1) {
		return "The address must end in a well-known domain or two letter " + "country.";
	}
	if (len<2) {
		return "This address is missing a hostname!";
	}
	return "1";
}


function trim(str){
	if (!str) return '';
	if (str == '') return '';
	return str.replace(new RegExp('^'+String.fromCharCode(92)+'s*'),'').replace(new RegExp(String.fromCharCode(92)+'s*'+String.fromCharCode(36)),'');
}

function check_contactus_miniform(frm) {
	if (!frm) return false;
	
	if (emailCheck(frm.email.value) != '1') {
		frm.email.style.backgroundColor="yellow";
		return false;
	} else {
		frm.email.style.backgroundColor="";
	}
	return true;
}