$(function() {
	$(".button").click(function() {
		var name = $("input#name").val();
		var email = $("input#email").val();
		var apos = document.form.email.value.indexOf("@");
		var dotpos = document.form.email.value.lastIndexOf(".");
	
		if(name==null||name==""){
			alert("Please enter your name.");
			$("input#name").focus();
			return false;
		}
		else if(email==null||email==""){
			alert("Please enter your email address.");
			$("input#email").focus();
			return false;
		}
		else if(apos<1||dotpos-apos<2){
			alert("Invalid Email Address, please check if your email address is correct.");
			$("input#email").focus();
			return false;
		}
		else{
			return true;
		}
		return false;
	});
});