function NewWindow(url)
        {var wl,wt,ww,wh,wp,new_window;
        if(screen.width > 640){ww=786;wh=460;}else{ww=626;wh=340;}
        wl=((screen.width-ww)/2)-5;
        wt=((screen.height-wh)/2)-70;
        wp =  'height='+wh+',width='+ww+',top='+wt+',left='+wl+',scrollbars=yes,resizable=yes,menubar=yes,status=yes,directories=yes,location=yes'
        new_window=window.open(url,'store',wp)
        if(parseInt(navigator.appVersion)>=4){new_window.window.focus();}}