if (document.images) {
leftnav_menu1On = new Image();
leftnav_menu1On.src = "/images/fr/diensten/leftnav_menu1_1.gif";
leftnav_menu2On = new Image();
leftnav_menu2On.src = "/images/fr/diensten/leftnav_menu2_1.gif";
leftnav_menu3On = new Image();
leftnav_menu3On.src = "/images/fr/diensten/leftnav_menu3_1.gif";

leftnav_menu1Off = new Image();
leftnav_menu1Off.src = "/images/fr/diensten/leftnav_menu1_0.gif";
leftnav_menu2Off = new Image();
leftnav_menu2Off.src = "/images/fr/diensten/leftnav_menu2_0.gif";
leftnav_menu3Off = new Image();
leftnav_menu3Off.src = "/images/fr/diensten/leftnav_menu3_0.gif";

}

function ShowHide(imgDocID,imgObjName) {
if (document.images) 
  document.images[imgDocID].src = eval(imgObjName + ".src")
}