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  { ds.visibility = "visible"; }
	}
}