Clear all selections in SELECT
===

    <select id="number" name="number">
    <option value=""></option>
    <option value="1">01</option>
    <option value="2" selected="selected">02</option>
    <option value="3">03</option>
    <option value="4" selected="selected">04</option>
    <option value="5">05</option>
    </select>
    <span id="clear">clear all</span>
    
    $('#clear').click(function(){
      // what should be here?
    })

How can i clear/remove all selections in select#number ?