// 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 {
              //top position
              tv = mouseY(evt) + 20;
              //left position (divide by greater number to bring closer to cursor)
              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";
            }
         }
}