How to add the tooltip to the element by jquery or javascript?

JavaScript
1

i want to add a tip----click to copy to the Copy To Clipboard… button like this site(http://www.retailmenot.com/). the yellow part with a Scissor. but when i using jquery to add a tip to it. it doesn’t work. why? i test it on this

site:

http://bowser.effectgames.com/~jhuckaby/zeroclipboard/test10.html

$(document).ready(function(){
   $("#d_clip_container").hover(
  function () {
    $(this).append($('<span class="tip">click to copy</span>'));
  },
  function () {
    $(this).find("span:last").remove();
  });
})

i have added the jquery library.

the reason the tooltip can’t work maybe the copied text is wrapped by the flash, but this site (retailmenot.com) can do. i don’t know why?