title: Expand Div over others on mouse over jquery
body: <p>i'm actually trying to build a products list inside a table. I already have the php code which takes data from db and places in the page but i'm stuck with jquery and javascript, i'm such a noob in that. I've been reading around some documentation and i went out with this script:</p>
  
  <p>javascript</p>
  
  <pre><code>$(window).load(function(){
  $('.principale').hover(function() {
      $(this).animate({
          width: 215, height: 350, margin: 0,
      }, 'fast');
  /*  $(this).animate().css('box-shadow', '0 0 10px #44f')*/
      $(this).animate().css('box-shadow', '0 0 5px #000')
  
      }, function() {
          $(this).animate().css('box-shadow', 'none')
          $(this).animate({
              width: 210, height: 240, margin: 0,
          }, 'fast');
      });
  });
  </code></pre>
  
  <p>css</p>
  
  <pre><code>.tabellainizio {
      margin-top:100px;
  }
  .bordini {
      border: 1px #DDD solid;
  }
  .principale {
      height: 240px;
      width: 210px;
      overflow: hidden;
  }
  .principale .contenitore {
      height: 240px;
      width: 210px;
      float: left;
      display: block;
  }
  .immagine {
      border: 1px solid maroon;
      text-align: center;
      margin: 15px;
      height: 168px;
      width: 168px;
      position:relative;
  }
  .content {
      display: none;
  margin: 15px;
  }
  .contenitore:hover {
      width: 215px;
      height: 350px;
      margin: 0px;
      border: 1px solid black;
  }
  .contenitore:hover .content {
      display: block;
  }
  .contenitore:hover .immagine {
      position:relative;
  }    
  </code></pre>
  
  <p>you can see a demo here:
  <a href="http://jsfiddle.net/fozzo/EWJGJ/" rel="noreferrer">http://jsfiddle.net/fozzo/EWJGJ/</a></p>
  
  <p>But this isn't really what i need. 
  When a div expands it should expand from the center over the others that should instead remain in their positions. I think this involve to use z-index and position in css as far as i read working examples but i really don't understand how to make it works.
  Any help would be apreciate. </p>