SetFocus on first field

Hi

I have a cfform as follows:

<cfform action="" method="post" name="contactfrm" preloader="yes" format="flash"
height="300" width="500" skin="haloblue" timeout="30" onload="FName.setFocus()">

When the onload event runs the first input field has a blue glow around the edge of the box, but I can't find a way of making the cursor active in the field so that the user can start typing without having to click the mouse in the field first.

Can anybody help please.

Thanks.
Diane