// JavaScript Document
function chkForm(){

	if (document.register.first_name.value == "")
		{
		alert("Please enter your first name.");
		document.register.first_name.focus();
		return false;
		}
	if (document.register.last_name.value == "")
		{
		alert("Please enter your last name.");
		document.register.last_name.focus();
		return false;
		}
	if (document.register.email.value == "")
		{
		alert("Please enter your email address.");
		document.register.email.focus();
		return false;
		}
	if ((document.register.email.value.indexOf('@') == -1) || (document.register.email.value.indexOf('.') == -1))
		{
		alert("Invalid email address.");
		document.register.email.focus();
		return false;
		}
}