<script src="http://code.jquery.com/jquery-latest.js"></script>
<script>
function showUser(str) {
if (str=='')
{
$("#txtHint").html("");
return;
}
$("#txtHint").html("<img src='loading paveikslelis....' />");
$.post("******.php", { kasnors: "llalala", darkas: "tralala" },
function(data) {
$("#txtHint").html(data);
});
}
</script>