trapping mouse cursor on ImageButton

Hi guys.

My problem is actually trying to set an 'invisible' mouse cursor on my web page and i can use my arrowkeys to navigate my 'invisible' mouse cursor in between image buttons.

Here's an screenshot example:



This is when the mouse cursor is placed on the button. The buttons has already coded with the mouseover event so when the cursor is on it, the image will change.

Thus when i presses the down arrowkey, the cursor should move to the image button below as follow:



Is it possible to do so in asp.net? Been searching for it over at google..no luck though. Please help me out

 

P.S. I am using VS08, ASP.NET web application, C# ...