function validar() {
	var form = document.contact_form;
	
	if(form.name.value == "") {
		alert("You must fill in the required fields");
		form.name.focus();
		return false;
	}
	
	if(form.email.value == "") {
		alert("You must fill in the required fields");
		form.email.focus();
		return false;
	}
	
	if(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(form.email.value)) {
		
	} else {
		alert("Incorrect email");
		form.email.focus();
		return false;
	}
	
	if(form.message.value == "") {
		alert("You must fill in the required fields");
		form.message.focus();
		return false;
	}
}