// 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";
      }
    }
  }