// Extended Tooltip Javascript
// copyright 9th August 2002, 3rd July 2005
// by Stephen Chapman, Felgall Pty Ltd

// permission is granted to use this javascript provided that the below code is not altered
var DH = 0;
var an = 0;
var al = 0;
var ai = 0;
if (document.getElementById) {
 ai = 1;
 DH = 1;
 }
else {
 if (document.all) {
  al = 1; DH = 1;
	} 
 else {
  browserVersion = parseInt(navigator.appVersion); 
  if ((navigator.appName.indexOf('Netscape') != -1) && (browserVersion == 4)) {
	 an = 1;
	 DH = 1;
	 }
  }
 }
  
function fd(oi, wS) {
 if (ai) return wS ? document.getElementById(oi).style:document.getElementById(oi); 
 if (al) return wS ? document.all[oi].style: document.all[oi]; 
 if (an) return document.layers[oi];
 }
 
function pw() {
 return window.innerWidth != null? window.innerWidth: document.body.clientWidth != null? document.body.clientWidth:null;
 }
 
function mouseX(evt) {
 if (evt.pageX) return evt.pageX;
  else if (evt.clientX)return evt.clientX + (document.documentElement.scrollLeft ?  document.documentElement.scrollLeft : document.body.scrollLeft);
   else return null;
 }
 
function mouseY(evt) {
 if (evt.pageY) return evt.pageY;
  else if (evt.clientY)return evt.clientY + (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);
   else return null;
 }
 
function popUp(evt,oi) {
 if (DH) {
  var wp = pw(); ds = fd(oi,1);
  dm = fd(oi,0);
  st = ds.visibility;
  if (dm.offsetWidth) ew = dm.offsetWidth;
   else if (dm.clip.width) ew = dm.clip.width;
  if (st == "visible" || st == "show") {
   ds.visibility = "hidden";
   }
  else {
   tv = mouseY(evt) + 20;
   lv = mouseX(evt) - (ew/4);
 	 if (lv < 2) lv = 2;
	  else if (lv + ew > wp) lv -= ew/2;
	 if (!an) {
	  lv += 'px';
	  tv += 'px';
	  }
	 ds.left = lv;
	 ds.top = tv;
	 ds.visibility = "visible";
	 }
 }
}