// 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);
					lv = evt.pageX - 250;
				} else {
					tv = evt.y + 20 + document.body.scrollTop; 
					//lv = evt.x  - (ew/4) + document.body.scrollLeft;
					lv = evt.x  - 90 + document.body.scrollLeft;
				} 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";
		}
	}
}