function validate() {
	alert((document.getElementById("app_1").length);
	if (document.getElementById("app_1").length==0 || document.getElementById("app_2").length==0 || document.getElementById("nom").length==0 || document.getElementById("email").length==0) {
	return;
	} else {
	document.getElementById("as_hidden").value="OK";
	document.getElementById("cform").submit();
	}
}