  if (document.all || document.layers || document.getElementById || window.opera)
  {
    var valore = "";

    if (screen.width == 640 && screen.height == 480)
      valore = 50;

    else if (screen.width == 800 && screen.height == 600)
      valore = 100;

    else if (screen.width == 1024 && screen.height == 768)
      valore = 200;

    else if (screen.width == 1280 && screen.height == 800)
      valore = 200;

    else if (screen.width == 1280 && screen.height == 768)
      valore = 200;

    else if (screen.width == 1152 && screen.height == 864)
      valore = 200;

    else
      valore = 350;

    //document.writeln ("<body background=\"" + imageSrc + "\">");
  } else
    document.writeln ("<b>Errore fatale: </b>Il browser " + navigator.appName + " non supporta JavaScript1.2.");


//initialisation function
function random_imglink(){
var myimages=new Array() 
myimages[1]="http://www.idra.it/darkcamera/images/001.jpg" 
myimages[2]="http://www.idra.it/darkcamera/images/002.jpg" 
myimages[3]="http://www.idra.it/darkcamera/images/003.jpg" 
myimages[4]="http://www.idra.it/darkcamera/images/004.jpg" 
myimages[5]="http://www.idra.it/darkcamera/images/005.jpg" 
myimages[6]="http://www.idra.it/darkcamera/images/006.jpg" 
myimages[7]="http://www.idra.it/darkcamera/images/007.jpg" 
myimages[8]="http://www.idra.it/darkcamera/images/008.jpg" 
myimages[9]="http://www.idra.it/darkcamera/images/004.jpg"

var ry=Math.floor(Math.random()*myimages.length)
if (ry==0) 
ry=1 
document.write('<img src="'+myimages[ry]+'" width="'+valore+'" height="'+valore+'" border="0" align="center">') } random_imglink()
