Look for AJAX !!!!! 

DS

-----Original Message-----
From: C.R.Vegelin [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, July 17, 2007 12:57 PM
To: [EMAIL PROTECTED]
Subject: [PHP] Dynamic refresh dropdown list

I have a selection form with multiple dropdown lists, let's say A, B and
C.
If the dropdown list B is changed, then dropdown list C should be
updated.
To get this done, I use a small javascript
    function reload(form)
    {  var val=form.B.options[form.B.options.selectedIndex].value; 
       self.location='myForm.php?B=' + val ;
    }
called by
 <select id="B" name="B" onChange="reload(this.form);">

This works fine, BUT all other dropdown lists are also reset.
So if I select another A, then another B, then also A is reset to its
prior value.
Any idea how I can refresh a specific dropdown, 
without affecting all the other dropdowns ?

TIA, Cor

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