function open_popup(page) {
 var puwidth = 700;
 var puheight = 500;
 var pu_left = (screen.width - puwidth)/2;
 var pu_top = (screen.height - puheight)/2;
 if (page == 1)
   window.open('print_schedule.asp?cType=T','popup','toolbar,resizable,scrollbars,top=' + pu_top + ',left=' + pu_left + ',width=' + puwidth + ',height=' + puheight)
 else
   window.open('print_schedule.asp?cType=G','popup','toolbar,resizable,scrollbars,top=' + pu_top + ',left=' + pu_left + ',width=' + puwidth + ',height=' + puheight);
}