// Extended Tooltip Javascript
// copyright 9th August 2002, 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 (ws == 1) {
		if (ai) {
			return (document.getElementById(oi).style);
		}
		else {
			if (al) {
				return (document.all[oi].style);
			} 
			else {
				if (an) {
					return (document.layers[oi]);
				}
			};
		}
	} 
	else {
		if (ai) {
			return (document.getElementById(oi));
		} 
		else {
			if (al) {
				return (document.all[oi]);
			} 
			else {
				if (an) {
					return (document.layers[oi]);
				}
			};
		}
	}
}

function pw() {
	if (window.innerWidth != null) 
		return window.innerWidth; 
	if (document.body.clientWidth != null)
		return document.body.clientWidth; 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 {
			if (evt.y || evt.pageY) {
				if (evt.pageY) {
					tv = evt.pageY + 20;
					lv = evt.pageX - (ew/4);
				} else {
					tv = evt.y + 15 + document.body.scrollTop; 	// change location vert.
					lv = evt.x - 120; 							// change location horiz. greater the number the more it moves left
					//lv = evt.x - 150;
				} 
				if (lv < 2) lv = 2; 
				else if (lv + ew > wp) 
					lv -= ew/2; 
					ds.left = lv; ds.top = tv;
				} 
				ds.visibility = "visible";
				}
			}
		}