var DHTML = document.getElementById || document.all || document.layers;

function checkform()
	{
	ro = new Array( "numele", "e-mail-ul", "telefonul", "mesajul");
	for (var i=0; i<4; i++)
		{
		user_input = document.cerere.elements[i];
		if (!user_input.value)
			{
			alert('Nu ati completat ' + ro[i] + '!');
			return false;
			}
		}
	return true;
	}