function setClassOver(node) {
    if (document.all&&document.getElementById) {
    node.className += " over";
    }
  }
  function unsetClassOver(node) {
    if (document.all&&document.getElementById) {
    node.className = node.className.replace(" over", "");
    }
  }

  function MM_swapImgRestore() { //v3.0
    var i,x,a=document.MM_sr; for (i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
  } 
  function MM_preloadImages() { //v3.0
    var d=document; 
    if (d.images) {
      if (!d.MM_p) d.MM_p=new Array();
      var i,j=d.MM_p.length,a=MM_preloadImages.arguments; 
      for (i=0; i<a.length; i++)
        if (a[i].indexOf("#")!=0) {
          d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];
        }
    }
  }  
  function MM_findObj(n, d) { //v4.0
    var p,i,x;  if (!d) d=document;
    if ((p=n.indexOf("?"))>0&&parent.frames.length) {
      d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);
    }
    if (!(x=d[n])&&d.all) x=d.all[n];for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
    for (i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
    if (!x && document.getElementById) x=document.getElementById(n);return x;
  }
  
  function MM_swapImage() { //v3.0
    var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; 
    for (i=0;i<(a.length-2);i+=3)
      if ((x=MM_findObj(a[i]))!=null) {
        document.MM_sr[j++]=x; if (!x.oSrc) x.oSrc=x.src;x.src=a[i+2];
      }
  }
  
  // used to show and hide layers
  function MM_showHideLayers() { //v3.0
    var i,p,v,obj,args=MM_showHideLayers.arguments;
    for (i=0; i<(args.length-2); i+=3) 
      if ((obj=MM_findObj(args[i]))!=null) {
        v=args[i+2];
        if (obj.style) {
          obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v;
        }obj.visibility=v;
      }
  }