var intervalId=0;
var width,count;
var steps=new Array(26,25,25,22,21,18,16,13,7,2);

function startLevel3Animation() {
  if (intervalId==0 && document.getElementById('menulevel3')) {
    intervalId=setInterval("doLevel3Animation()",40);
    width=0;
    count=0;
  }
}

function doLevel3Animation() {
  try {
    var el=document.getElementById('menulevel3');
    if (count<10) {
      width+=steps[count++];
      el.style.width=width+'px';
    } else {
      clearInterval(intervalId);
      document.getElementById('menulevel3content').style.display='block';
      el.style.display='block'; // IE6
    }
  }
  catch (err) { ; }
}