This sample demonstrates a very simple AJAX popup window that retrieves content
from the server while not reloading the current page and displaying that content
as a pop over window at the mouse position. This example requires no explicit client
script code from the developer - only the event hookups are required for onmouseover
and onmouseout which are single function calls each.
The process for this is to drop a HoverPanel control on the page and set a few
optional operational properties. You then hook up the mouseenter and mouseout
events on the hyperlink in the grid to fire when hovering over a row and moving
out. The mouseenter then fires a call to startCallback() which initiates the callback
picks up the HTML from the server and renders it into the hover panel control on
the page - in this case at the current mouse position.
You get many options on how the dialog is formatted including draggability,
auto-closing, shadows, ability to close the window and so on.