//globale Variablen

      var winkel=1;
      var ID
      var x, y, oben, unten, rechts, links

      //Dimension der Kugel, please adjust
      var breite = 150;
      var hoehe = 150;


      function billard() {
      setzeVariablen();
      bewege();
      ID = setTimeout("billard()", 60);
     }

      function setzeVariablen() {
       if (document.all) {
        x = document.all.kugel.style.posLeft;
        y = document.all.kugel.style.posTop;
        links = document.body.scrollLeft;
        rechts = document.body.clientWidth + document.body.scrollLeft;
        oben = document.body.scrollTop;
        unten = document.body.clientHeight + document.body.scrollTop;
        } else if (document.layers) {
        x = document.kugel.left;
        y = document.kugel.top;
        links = window.pageXOffset;
        rechts = window.innerWidth + window.pageXOffset;
        oben = window.pageYOffset;
        unten = window.innerHeight + window.pageYOffset;
        } else if (document.getElementById) {
        x = parseInt(document.getElementById("kugel").style.left);
        y = parseInt(document.getElementById("kugel").style.top);
        links = window.pageXOffset;
        rechts = window.innerWidth + window.pageXOffset;
        oben = window.pageYOffset;
        unten = window.innerHeight + window.pageXOffset;
         }
      }


      function bewege() {

      if(x < 260){

       x += Math.round(10);
       if (document.all) {
       document.all.kugel.style.posLeft = x;
       document.all.kugel.style.posTop = y;
       } else if (document.layers) {
       document.kugel.left = x;
       document.kugel.top = y;
       } else if (document.getElementById) {
       document.getElementById("kugel").style.left = x + "px";
       document.getElementById("kugel").style.top = y + "py";
       }
      }
      }

       function verstecke() {
       if (document.all)
       document.all.kugel.style.visibility = "hidden";
       else if (document.layers)
       document.kugel.visibility = "hide";
       else if (document.getElementById)
       document.getElementById("kugel").visibility = "hidden";
       clearTimeout(ID);
}