/* check if a field is empty */
function emptyCheck(field,msg) {
	if (document.getElementById(field).value==""){
		alert(msg);
		return false;
	}
	else { return true; }
}

/* function handling form submition */
function submitenter(myfield,e)
{
	var keycode;
	if (window.event) keycode = window.event.keyCode;
	else if (e) keycode = e.which;
	else return true;
	
	if (keycode == 13) {
		myfield.form.submit();
		return false;
	}
	else return true;
}