ON mouse over a list should come to a menu control and linkbutton

I have a menu control, it has the items and child items

item-->8051

childitems-->programmers,developmentboards,projectboards,flashmagicsupport

when mouseover on item the child items list should dispaly with out any click

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And also i want same for the linkbutton, means i will have a linkbutton with text 8051 when mouse is on the button the childitems list mentioned above

should display

please help me on the above two requirements