Pop up meaning of a word in a text

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ASP.NET

Javascript

Hi
I have an html text and an a seperate, specific dictionary which hold definitions of some words in xml format. Is there a way to pupulate maning from this dictionary when a word is clicked, hovered or selected in the text.

Lets say this is my text

Lorem Ipsum is simply dummy text of the printing and typesetting industry.

This is my dictionary (in a seperate file)

<word>dummy</word>
<definition>a copy or imitation of an object</definition>

When I click or hover on dummy,a pop up screen should show definiton to word "dummy".

or

add pseudo link with definition as title as shown below.
<a href="#" title="a copy or imitation of an object">dummy</a>
<a href="#" title="a copy or imitation of an object">dummy</a> just like this one

I prefer second one.

Thanks in advance.