function popup(url, wid, hi) {
   window = window.open (url, "", "toolbar=0, location=0, directories=0, status=0, menubar=no, scrollbars=1, resize=no, width=" + wid + ", height=" + hi + ", left=50, top=50");
 }

function fullscreen(url) {
   window = window.open (url, "", "location=0, status=0, scrollbars=0, width=" + screen.width + ", height=" + screen.height);
   window.moveTo(0,0);
 }