// 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) + 20;
					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";
			}
	}
}