open datepicker from my image

open datepicker from my image

Hi,
I've this html code:

<input type="Text" name="datepickerOne"  id="datepickerOne" readonly="readonly">
<img src="gfx/calendar.png" id="datepickerImage" />

I don't want to use the jquery icon trigger:
$("#datepickerOne").datepicker({
      showOn: 'button',
      buttonImage: 'gfx/calendar.png',
      buttonImageOnly: true,
      dateFormat: 'dd/mm/yy',
      firstDay: 1
});

I'd like to click on my image and open the calendar.

Thank,
ale