Thumbnailizer.js

javascript:(function() {
  var s=document.createElement('script');
  s.setAttribute("src", "http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.js");
  
  if(typeof jQuery=='undefined') {
      document.getElementsByTagName('head')[0].appendChild(s);
  }
  
  function doWork() {
      
      $.expr[':'].image = function(obj){
          return obj.href.match(/(jpg|png|gif)$/i);
      };
      
      $("a:image").each(function() {
          var img = new Image();
          img.src = $(this).attr('href');
          $(img).attr("class", "thumb");
          $(this).html(img).attr("target", "_blank");
          $(img).load(function() {
              $(img).attr("rel", img.width).css("width", getWidth(img.width)+"px");
          });
      });
      
      $("img.thumb").mouseover(function() {
            $(this).css("width", $(this).attr("rel")+'px');
        }).mouseout(function() {
           $(this).css("width", getWidth($(this).attr("rel"))+"px");
        });
      
  }
  
  function getWidth(n) {
      if ( n > 300 ) {
           return n*0.6;
       } else if ( n == 0 ) {
           return "300";
       } else {
           return n;
       }
  }
  
  var tryjQuery=function() {
      setTimeout(function() {
        if (typeof jQuery=='undefined') {
          if (tryCounter) {
            tryCounter--;
            tryjQuery();
          } else {
            msg='Sorry, but after ' + startCounter;
           showMsg();
         }
       } else {
         doWork();
       }
     }, 250);
   };
   tryjQuery();
  
})();