// Copyright Toni Cornelissen 2005

  var pScale = 1.5E10;
  var mScale = 2;
  var tScale = 3600*24;    // time scale
  var dt    = 24*3600 * 1;
  var gtimer = null;
  var canvas = document.getElementById("canvas");
  var edit = null

  canvas.onclick = onClick;
  document.onkeydown = onKeyDown;
  tmp = canvas.getAttribute("dt");    if (tmp) { dt     = parseFloat(tmp); }
  tmp = canvas.getAttribute("scale"); if (tmp) { pScale = parseFloat(tmp); }
  var childs = canvas.childNodes;
  for (i = 0; i < childs.length; i += 2) {
     ///document.write("Node: " + i + "<br />\n");
     childs[i].onmouseover = onMouseOver;
	 childs[i].onmouseout  = onMouseOut;
  }
  firstStep();