function popup(Location, forceHeight, forceWidth){
x=820;
y=575;

if (forceHeight) {
	y=forceHeight;
}

if (forceWidth) {
	x=forceWidth;
}

xresnow = x;
yresnow = y;
if (navigator.appVersion.indexOf("Mac")!=-1 && document.all) {
		xresnow-=0;
		yresnow-=0;
}

xl = (screen.availWidth/2)-(xresnow/2);
tt = (screen.availHeight/2)-(yresnow/2);
 if (document.all) mw=window.open(Location,'mwi','toolbar=no,scrollbars=no,width='+xresnow+',height='+yresnow+',left='+xl+',top='+tt);
 else {
   if (parseFloat(navigator.appVersion)<4.75)
     mw=window.open(Location,'mwi','left='+xl+',top='+tt+',width='+x+',height='+y+',toolbar=no,scrollbars=no,status=0,location=0');
   else {
     mw=window.open(Location,'mwi','left='+xl+',top='+tt+',width='+x+',height='+y+',toolbar=no,scrollbars=no,status=0,location=0');
     setTimeout("mwFix("+xl+","+tt+",x,y)",10);
   }
 }
}