// JavaScript Document
function valid_email(email){
	var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i;
	var returnval=emailfilter.test(email);
	return returnval;
}

function valid_form(){
	d = document.frm_contact;
	if (d.name.value == ""){
		alert("Please input your name !");
		d.name.select();
	}else if (d.email.value == ""){
		alert("Please input your e-mail !");
		d.email.select();
	}else if (valid_email(d.email.value) == false){
		alert("Your e-mail is incorrect !");
		d.email.select();	
	}else if (d.message.value == ""){
		alert("Please input your message");	
		d.message.select();
	}else{
		d.submit();	
	}
}