// JavaScript Document
	<!--
	//preload
	function preload(imgObj,imgSrc) {
	    eval(imgObj+' = new Image()');
	    eval(imgObj+'.src = "'+imgSrc+'"');
	}
	preload('abgassystem_hi','/de/graphics/but_abgas_hi.gif'); 
	preload('abgassystem_lo','/de/graphics/but_abgas_lo.gif');
	preload('solarthermie_hi','/de/graphics/but_solar_hi.gif'); 
	preload('solarthermie_lo','/de/graphics/but_solar_lo.gif');
	preload('heizkessel_hi','/de/graphics/but_heizkessel_hi.gif'); 
	preload('heizkessel_lo','/de/graphics/but_heizkessel_lo.gif');
	preload('kaminoefen_hi','/de/graphics/but_kaminoefen_hi.gif'); 
	preload('kaminoefen_lo','/de/graphics/but_kaminoefen_lo.gif');
	
	//wechseln
	function changePreloadedImage(imgName,imgObj) {	
	        eval("document."+imgName+".src = "+imgObj+".src");
	}
	
function MM_showHideLayers() { //v9.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}
	// -->