// Extended Tooltip Javascript - Enhanced
// copyright 9th August 2002, 8th February 2009
// by Stephen Chapman, Felgall Pty Ltd

// permission is granted to use this javascript provided that the below code is not altered
function pw() {return window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth}; function ph() {return window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight}; function obH(oi) {var obj = document.getElementById(oi); return obj.offsetHeight || obj.clip.height || 0;} function mX(evt) {return evt.clientX ? evt.clientX + (document.documentElement.scrollLeft || document.body.scrollLeft) : evt.pageX;} function mY(evt) {return evt.clientY ? evt.clientY + (document.documentElement.scrollTop || document.body.scrollTop) : evt.pageY}
function sX() {return window.pageXOffset ? window.pageXOffset : document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft;} function sY() {return window.pageYOffset ? window.pageYOffset : document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop;}
function popUp(evt,oi) {if (document.getElementById) {var wp = pw(); dm = document.getElementById(oi); var xs = sX(); var ys = sY(); var oh = obH(oi); ds = dm.style; st = ds.visibility; ew = dm.offsetWidth || dm.clip.width || 0; if (st == "visible" || st == "show") { ds.visibility = "hidden"; } else {tv = mY(evt) + 30; lv = mX(evt) - (ew/4); if (lv < (xs + 2)) lv = xs + 2; else if (lv + ew > wp + xs) lv = wp + xs - ew - 20; if (tv + oh + 30 > ph()+ys) tv = tv - oh - 50; lv += 'px'; tv += 'px'; ds.left = lv; ds.top = tv; ds.visibility = "visible";}}}