var ubahn = null; // object

function doMove() {
  ubahn.style.left = parseInt(ubahn.style.left)+1+'px';
  ubahn.style.top = (-28/817*parseInt(ubahn.style.left)+59)/16+'em';
  setTimeout(doMove,1);

  if (parseInt(ubahn.style.left)>817) {
  	ubahn.style.top = '59px';
	  ubahn.style.left = '-652px';
  } // if (ubahn.style.left>817)
}

function init() {
  ubahn = document.getElementById('ubahn');
  ubahn.style.top = '59px';
  ubahn.style.left = '-652px';
  ubahn.style.visibility='visible';
  doMove();
}


window.onload = init;