// 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) + 20; lv = mouseX(evt) - (ew/4);
				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";
		}
	}
}