// JavaScript Document

	function validateSignup(obj){

		var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if (!filter.test(obj.email.value)) {
			alert('Please enter a valid e-mail address.');
			return false;			
		}
		
		return true;
	}