function show_tip(id, evt){
	var x, y, h; 
	var frame=document.getElementById(id);
	if (evt) {
		x = evt.clientX; 
		y = evt.clientY;
	} else {
		x = window.event.clientX; 
		y = window.event.clientY; 
	}
	h = document.documentElement.scrollTop||document.body.scrollTop;
	if (frame.style.display!="block") {
		frame.style.display = "block";
	}
	x = x - frame.clientWidth  + 150; 
	y = y - frame.clientHeight - 10 + h;
	frame.style.left = x + 'px'; frame.style.top = y + 'px'; 
} 
function hide_tip(id) { 
	document.getElementById(id).style.display = "none"; 
} 

//v1.0
//Copyright 2006 Adobe Systems, Inc. All rights reserved.
function AC_AddExtension(src, ext)
{
  if (src.indexOf('?') != -1)
    return src.replace(/\?/, ext+'?');
  else
    return src + ext;
}