Bild per Javascript verkleinert aufrufen?

[snoodles]

ups, sorry falscher cod :D

das is der richtige:

  
var saveWidth = 0;  
         function skalieren(was)  
  {  
  was = document.getElementById(was);  
  if (navigator.appName=="Netscape")  
          winW = 800;  
  if (navigator.appName=="Opera")  
   winW = 800;  
  if (navigator.appName.indexOf("Microsoft")!=-1)  
   winW = 800;  
  if (was.width>(winW) || saveWidth>(winW))  
  {  
  if (was.width==(winW))  
   was.width=saveWidth;  
  else  
         {  
  saveWidth = was.width;  
  was.style.cursor = "pointer";  
  was.width=(winW);  
  }  
  }  
  }  
  
  function layer_show(dname,show) {  
  document.getElementById(dname).style.display = show;  
  }