cfgrid and href issues.

I am unable to get the href action to fire when clicking on a grid row.  The grid is populating fine.  Here is the code.

    <cfform id="gridForm"  method="post">
        <cfgrid format="flash" name="mfgGrid" height="400" width="300"
            query="allManufacturers" colheaderalign="center" rowheaders="no" selectmode="single"
            highlighthref="yes" appendkey="yes" href="productDetails.cfm?qtype=patterns&mfg=manufacturerName" hrefkey="manufacturerName">
           
            <cfgridcolumn name="manufacturerName" header="Manufacturer Name" target="_self">
        </cfgrid>
   
       
        </cfform>

Basically, when the user selects a manufacturer, I want to to change pages to a new page that will display the various product patterns for the selected manufacturer.  For example, if the user selects Nike, I want to show all Nike patterns.  The queries are all working fine, but every time I click on a grid row absolutly nothing happens.

Ideas?