function email_checker(email){
	if(email == ""){
		return false;
	}
	else{
		if(email.match(/\b(^(\S+@).+((\.com)|(\.net)|(\.edu)|(\.mil)|(\.gov)|(\.org)|(\..{2,2}))$)\b/gi)){
			return true;
		}
		else{
			return false;
		}
	}
}

function testEmailChecker(){
if(email_checker(document.getElementById("email").value))
	alert("valid email")
else
	alert("invalid email")
}