Bild nach Klick austauschen

[Tolwin]

Hi wucher wichtel,

habe es in meine Funktion eingebaut

function showhide(id){
 if (document.getElementById){
  obj = document.getElementById(id);
  if (obj.style.display == "none"){
   obj.style.display = "inline";
   picture[1] = new Image();
   picture[1].src = "images/icons/arrow_down.png";
  } else {
   obj.style.display = "none";
    picture[0] = new Image();
   picture[0].src = "images/icons/arrow_up.png";
  }
 }
}

aber wie genau kann ich picture[] dem image im HTML Text zuweisen?

<a href="#" onclick="showhide('div01'); return(false); arrowImage(document.upImage)">
<img src="images/icons/arrow_down.png" name="downImage"></a>

Grüße
Tolwin