function Lvl_openWin(u,n,w,h,l,t,c,f)
{
	var x=((screen.width-w)/2);if(c==1){l=x;t=(screen.height-h)/2;}if(c==2){l=x}
	f+=',top='+t+',left='+l;LvlWin=window.open(u,n,f);LvlWin.focus();
};

function openWindowCentered(htmlFile,width,height,name)
{
	Lvl_openWin(htmlFile,name,width,height,'0','0','1','width='+width+',height='+height);
};

function openSlideshow(where)
{
	openWindowCentered('Gallery/' + where + '/index.html',1024,768,'PhotoSlideshow');
};