// 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";
}
}
}