[Jine]

Google:

<label for="mr"> <input type="radio" checked="checked" name="title" value="Mr" id="mr" /> Mr.</label><br />
<label for="mrs"> <input type="radio" name="title" value="Mrs" id="mrs" /> Mrs.</label>br />
<label for="miss"> <input type="radio" name="title" value="Miss" id="miss" /> Miss</label>br />
<label for="ms"> <input type="radio" name="title" value="Ms" id="ms" /> Ms.</label>br />
<label for="dr"> <input type="radio" name="title" value="Dr" id="dr" /> Dr.</label>br />

EDIT: Notera att dom har samma namn, men olika id och value.