$(function(){
            $("#demo img[title]").tooltip('#demotip');
            $(".download_now").tooltip({ effect: 'slide',offset: [80,180]});
            // initialize tooltip
            $("#dyna img[title]").tooltip({
               // use single tooltip element for all tips
               tip: '#dynatip', 
               // tweak the position
               offset: [10, 2],
               // use "slide" effect
               effect: 'slide'
            // add dynamic plugin 
            }).dynamic( {
               // customized configuration on bottom edge
               bottom: {
                  // slide downwards
                  direction: 'down',
                  // bounce back when closed
                  bounce: true
               }
            });
         });