function validate(){
	if( $('orderNo').value == "" ) {
			alert("Please enter your order number");
			$('orderNo').focus();
			return false;
	} else if ($('email').value == "" ) {
			alert("Please enter your e-mail address");
			$('email').focus();
			return false;
	} else if (!filter.test($('email').value)){
			alert("Please enter one valid e-mail address");
			$('email').focus();
			return false;
	}
	return true;
}