function empty(id) {
	var text;
	if (id == "user") text="username";
	else if (id=="pass") text="******";
	else if (id == "news") text="newsletter";
	else text="cauta"; 
	if (document.getElementById(id).value == text) document.getElementById(id).value="";
}
function fill(id) {
	var text;
	if (id == "user") text="username";
	else if (id=="pass") text="******";
	else if (id == "news") text="newsletter";
	else text="cauta"; 
	if (document.getElementById(id).value=="")
		document.getElementById(id).value=text;
}