// 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";
			}
		}
}