无法将下拉列表（dl dt dd select）设置为所选选项

I tried every way I could find on the web, java scripts, jquery ..you name it. So tried in php, as per beneath, but no joy,..anyone please *note: $_GET["sel"] has a value, retrieved from a hidden input, which was set correctly by javascript in the onchange ="SetDDLValueOnChange(this).* Thx

<dl>
<dt>Select a Menu Item before setting it's Fillings </dt>
<dd style=" margin: 0; " >
<select name="MenuItems" id="MenuItems" onchange="SetDDLValueOnChange(this);">
<?php

   /*** query the database ***/
   $mySelects = $wpdb->get_results("SELECT MI_Id, MI_Descr, Express FROM  
                wp_sb_menuitems");
   foreach ($mySelects as $row) 
   {      
    if ($_GET["sel"]  == $row->MI_Id)
    {   
    ?>
        <option selected="selected" value="<?=$row->MI_Id;?>[<?=$row->MI_Id;?>]"> <?=$row->MI_Descr;?> 
        </option>
   <?php
   }
   else
   {
   ?> 
       <option value="<?=$row->MI_Id;?>[<?=$row->MI_Id;?>]"> <?=$row->MI_Descr;?> </option>
    <!-- The above creates an associative array of the options, such that the individual elements of the drop down, 
         eg the Id and Descr can be accessed seperately   -->
    <?php
    }
}
?>

</select>
</dd>
</dl>