var OpenWin=null;
var onscreen=false;

function gallery(page) {
OpenWin = this.open(page, "CtrlWindow", 'left=50,top=50,toolbar=0,scrollbars=0,status=1,location=0,menubar=0,resizable=1,width=700,height=500');

OpenWin.focus();
onscreen=true; 
}