var v=parseFloat(navigator.appVersion);
var b=navigator.appName;
var ie=false;
if(b=="Netscape"&&v>=3){nn=true;}
if(b=="Microsoft Internet Explorer"&&v>=4&&navigator.appVersion.indexOf("Win")!=-1){ie=true;}
function zoom(url,ww,hh,id){
	var wX=10;
	var wY=10;
	
	if(!ie){
		ww+=15;
		hh+=15;
	}
	if(v>=4){
		wX=(screen.availWidth-(ww+5))*.5;
		wY=(screen.availHeight-(hh+20))*.5;
	}
	
	popup=window.open(url,id,"scrollbars=0,resizable=0,width="+ww+",height="+hh+",left="+wX+",top="+wY);
}