$(function() {
   
  //cache the ticker
  var ticker = $("#ticker");
    
  //wrap dt:dd pairs in divs
  ticker.children().filter("dt").each(function() {
    
    var dt = $(this),
      container = $("<div>");
    
    dt.next().appendTo(container);
    dt.prependTo(container);
    
    container.appendTo(ticker);
  });
    
  //hide the scrollbar
  ticker.css("overflow", "hidden");
  
  //animator function
  function animator(currentItem) {
      
    //work out new anim duration
    var distance = currentItem.height();
   duration = (distance + parseInt(currentItem.css("marginTop"))) / 0.019;

    //animate the first child of the ticker
    currentItem.animate({ marginTop: -distance }, duration, "linear", function() {
      
   //move current item to the bottom
   currentItem.appendTo(currentItem.parent()).css("marginTop", 15);

   //recurse
   animator(currentItem.parent().children(":first"));
    }); 
  };
  
  //start the ticker
  animator(ticker.children(":first"));
    
  //set mouseenter
  ticker.mouseenter(function() {
    
    //stop current animation
    ticker.children().stop();
    
  });
  
  //set mouseleave
  ticker.mouseleave(function() {
            
          //resume animation
    animator(ticker.children(":first"));
    
  });
   });