var ah=screen.availHeight-10;
var aw=screen.availWidth-10;
var vh=520;
var vw=770;
var top=left=0;
var scrnw=screen.width;
var scrnh=screen.height;
if(scrnw>vw){
 left=(scrnw-vw)/2;
 top=(scrnh-vh)/2;
 }
function Gm(gc,gn)
{
 var viewer='gameview.htm?g='+gc+"g"+gn;
 window.open(viewer,'','height='+vh+',width='+vw+',top='+top+',left='+left);
}
function Wm(fn)
{
 window.open(fn,'','height='+ah+',width='+aw+',top=0,left=0,scrollbars');
}