How to show toolPopup for text longer than control (Textbox) length?
<p>Is there an easy way to say, on textboxHover, if the text inside the box or in other control
isn't completely visible, have a popup tool come up showing the complete
contents of the box? 
Just like
<img src="http://i.stack.imgur.com/BBi9d.png" alt="enter image description here"></p>
