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addOnloadHook(function () {
  if((location.href.indexOf("Special:Contributions")!=-1||
      location.href.indexOf("Special%3AContributions")!=-1)
     &&location.href.indexOf("&ais523")==-1&&location.href.indexOf("?ais523")==-1)
     // the ais523 in the line above is meant to be ais523, not your username; it's
     // to avoid a clash with a couple of other scripts I've written. Feel free to
     // expand it to avoid clashes with other contribs-manipulating scripts, though.
  {
    var i,li,a;
    li=document.getElementById("bodyContent");
    li=li.getElementsByTagName("li");
    i=-1;
    a=new Array();
    while(++i<li.length)
    {
      var s,t;
      var html = li[i].innerHTML;
      var match = html.match(/"\/wiki\/([^"]*)"/);
      if (!match)
        match = html.match(/"\/w\/index.php\?title=([^"]*)&amp;redirect=no"/);
      t = match[1];
      var spans = li[i].getElementsByTagName("span");
      var topspanfound = false;
      for (var j = 0; j < spans.length; j++)
      {
        if (spans[j].className == "mw-uctop")
        {
           topspanfound = true;
           break;
        }
      }
      s = topspanfound ? "#CCCCFF" : "#FFCCCC";
      if(a[t]!=undefined) s=(a[t]=="#CCCCFF"?"#CCFFFF":"#FFFFCC"); else a[t]=s;
      var span = document.createElement( "SPAN" );
      span.style.background = s;
 
      while( li[i].firstChild ) {
        span.appendChild( li[i].firstChild );
      }
      li[i].appendChild( span );
    }
  }
});