// 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 yoffset = 120;
var xoffset = 60;

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, visible) {

if (DH) {
	var wp = pw(); 	
	//alert (wp);
	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" || visible == "hidden") {
		ds.visibility = "hidden"; 
	} else {
		tv = mouseY(evt) - yoffset; 
		lv = mouseX(evt);	// + xoffset - (ew/4); 
		offset = ((wp - 965) / 2);
		rightboundary = 965 + offset - 175 -25;	//175 is right column, avoid blocking navigation
		//alert (ew+";"+lv+"->"+offset);
		if ((lv + ew) > rightboundary) {
			lv = rightboundary - ew - 25;//lv -= ew/2; 
			//alert ("965 + "+offset+ " - " + ew + " - 25 = " + lv);
		}
		if (lv < 155) lv = 155; 
		//alert (lv);
		if (!an) {lv += 'px';tv += 'px';} 
		ds.left = lv; 
		ds.top = tv; 
		ds.visibility = "visible";
	}
}
}