how come dis script wont work? Options

[UnNamed]

im tryin 2 put a hover thingy....its supposed 2 blurr every time ur mouse hover on it...heres da code

CODE

<!-- begin code provided by createblog.com -->
<style type="text/css">
a:hover
{
filter:blur(add="0",direction="90",strength="7"); height:0;
}
</style>
<!-- end code provided by createblog.com -->

how come dat dont work...