function Fadeout(id, speed) {
 var fps = Math.round(speed / 100);
 var tmp = 0;
 for(i = 100; i >= 0; i--) {
 setTimeout("Fadeout_Do('" + id + "'," + i + ")", (tmp * fps));
 tmp++;
 }
} 
function Fadeout_Do(id, k) {
 var obj = document.getElementById(id).style;
 if(k > 0) {
 obj.opacity = (k / 100);
 obj.MozOpacity = (k / 100);
 obj.KhtmlOpacity = (k / 100);
 obj.filter = "alpha(opacity=" + k + ")";
 } else {
 obj.display = "none";
 }
}