// 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) - 100; lv = mouseX(evt) - ew;
			
			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";
		}
	}
}