How to select a DOM element that was passed in as a parameter with Jquery
===

So I have

    <span onclick="show(this)">foobar</span>
    
    function show(theSpan)
    
    {
    ....... //select the span here
    }

How could I use Jquery selector to select the span? I tried $(theSpan) but it doesn't work. I want to select it as a Jquery object so that I can apply attr() to it.

Thanks!