var loaded=0;
var laston=0;
var current=0;
var toload=Array("bt_home","bt_impressum","bt_ausbildung","bt_ideen","bt_lernen","bt_kontakt");
var imageon=new Array(50);
var imageoff=new Array(50);

var lloaded=0;
var llaston=0;
var lcurrent=0;
var lroot=0;
var limageon=new Array(50);
var limageoff=new Array(50);

function bon(i) { if (loaded) { if (i!=current) { if (laston>0) boff(laston); document.images["button"+i].src=imageon[i-1].src; laston=i; } } }
function boff(i) { if (loaded) { if (i!=current) { document.images["button"+i].src=imageoff[i-1].src; laston=0; } } }

function lbon(i) { if (lloaded) { if (i!=lcurrent) { if (llaston>0) lboff(llaston); document.images["lbutton"+i].src=limageon[i-1].src; llaston=i; } } }
function lboff(i) { if (lloaded) { if (i!=lcurrent) { document.images["lbutton"+i].src=limageoff[i-1].src; llaston=0; } } }

function loadImages(root,now)
 {
   for (i=0;i<toload.length;i++)
    {
      imageon[i]=new Image();
      imageoff[i]=new Image();
      imageon[i].src=root+"/"+toload[i]+"_on.gif";
      imageoff[i].src=root+"/"+toload[i]+".gif";
    }
   
   loaded=1;
   //if (now>0) bon(now);
   current=now;
   
   if (lroot!=0)
    {
      for (i=0;i<lbuttons.length;i++)
       {
         limageon[i]=new Image();
         limageoff[i]=new Image();
         limageon[i].src=lroot+"/gfx/"+lbuttons[i]+"_on.gif";
         limageoff[i].src=lroot+"/gfx/"+lbuttons[i]+".gif";
       }
       
      lloaded=1;
      //if (lnow>0) lbon(lnow);
      lcurrent=lnow;
    }
 }