// JavaScript Document
function submitForm() {
var eMail = document.forms[0].email.value;
	if(eMail == "") {
		alert("Please input a email address.");
		document.forms[0].email.focus();
		document.forms[0].email.select();
	}
	else if(eMail.search(/^[a-zA-Z_0-9-]+(\.[a-zA-Z_0-9-]+)*@([a-zA-Z_0-9-]+\.)+[a-zA-Z]{2,7}$/) == -1) {
		alert("Please input a valid email address.");
		document.forms[0].email.focus();
		document.forms[0].email.select();
	}
	else {
		document.forms[0].submit();
	}
}

function clearValue() {
	document.forms[0].email.value = ""; 
}