jquery search for and replace text

I am looking for something i can do in jquery to search through for a certain word and change it into a link with the same word

for example lets say i have this div

<div>
We all know alot about doctors but dr. thomasson is an especially good one.

</div>

I want some how to look for 'thomasson' and change it too a href link so it looks like
<a href="#">thomasson</a>

Please help
LVL 4
Brant SnowAsked:
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leakim971PluritechnicianCommented:
check this : http://jsfiddle.net/Pc7En/

    var lookingFor = "thomasson";
    $("div").html( $("div").text().replace(new RegExp("(" + lookingFor + ")","g"), "<a href='http://tinyurl.com/c5vwwll'>$1</a>") );

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