I am struggling with this problem for over a week. I have a datagrid in
my web part and a button column (which is actually a link button) for
selecting the row and passing a cell value to another web part. What I
want is when I place the cursor over the link button named "select", I
would like to display the values in that row of the datagrid in a popup
menu using AJAX. The next row values should be displayed in the next
row's select linkbutton and so on.

In a nutshell, it should be an AJAX hover panel/menu to be displayed
when the cursor is placed over the linkbutton named "select" of the
button column.