Using a jQuery list box placed onto a tab control doesn't seem to work for posting?

Question

Hello,
I developed a U.I. in Dreamweaver for a  product and have several list boxes that use the onChange modifier to collect what the user selects from the list. I use the onChange=this.form.submit() function to grab the user's selection from the list box..
When this dropdown list box code is placed onto a form, it posts properly and I can retrieve the user's list selection.  If however I place the list box code onto a Tab page from a jQuery Tab Control, developed in Dreamweaver, the posting doesn't seem to work.
I must be missing something because identical code is working fine when the list box code is placed on a form yet when the code is repeated from within a Tab, it isn't working.
The code is simple, and shown below).  The list values are coming from a MySQL table.
$MyQuantity_query="SELECT * FROM Quantity_Table";
$MyQuantity_Result=mysqli_query($cxn,$MyQuantity_query) or Die ("Cannot connect");
echo"<select name='ThisQuantity[$RowCounter]' value='ThisQuantity[$Rowcounter]' onChange='this.form.submit()'><option value='-1' selected>Qty</option>";
While($MyQuantity_Row=mysqli_fetch_assoc($MyQuantity_Result))
   extract($MyQuantity_Row);
   echo"<option value='$Qty_Number'>$Qty_Number</option>";
echo"</select>";
Any suggestions would be appreciated.  Thanks.
Joel
[email protected]

Answer 1

Thanks you.
I tried placing the selection list inside of
tags but posting still doesn’t seem to be working? 
Regards,
Joel