function submitform() {
	if (document.getElementById("name").value == "") {
	alert("Please enter your Name")
	}
	else if (document.getElementById("email").value == "") {
	alert("Please enter your Email address")
	}
	else if (document.getElementById("comments").value == "") {
	alert("Please enter your comments")
	}
	else {
 	document.getElementById("contactus").submit();
	}
}