function validateEmailAddress(inputID){
	if (!checkEmailAddress(document.getElementById(inputID).value)) {
		alert("You have entered an invalid email.");
		document.getElementById(inputID).focus();
		return false;
	}
	return true;
}
function checkEmailAddress(e) {
	
	ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";

	for(i=0; i < e.length ;i++) {
		if(ok.indexOf(e.charAt(i))<0){ 
		return (false);
		}	
	}

	if (document.images) {
		re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
		re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
		if (!e.match(re) && e.match(re_two)) {
			return (-1);		
		} 
	}
}