To overwrite this function, you can add the following information to the stylesheet:
.table tbody tr:hover td, .table tbody tr:hover th { background-color: transparent; }
Demo: http://jsfiddle.net/BJrnC/2/
Note Noticed that I still get support for this answer. Twitter bootstrap now does this by default. If you want to add hover effects to the table, just add the .table-hover hover class to the body of your table, otherwise just omit it and it should not have any effects when it hangs. This only applies to the latest bootstrap version.
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