function cauta(form){
	if (form.ss.value.length==0) {
		alert("Va rugam introduceti textul de cautare (cel putin 4 litere)!");
		form.ss.focus();
		return false;
	}
	if (form.ss.value.length<4) {
		alert("Va rugam introduceti mai mult de 3 litere!");
		form.ss.focus();
		return false;
	}
	return true;
}