wid = window.screen.width;
hei = window.screen.height;
clr = window.screen.colorDepth;
ref = window.parent.document.referrer;
document.write(
   "<img src='./analyze/cala.cgi?" +
   "&w=" + wid + "&h=" + hei +
   "&clr=" + clr + "&ref=" + ref + "'>"
);