After installing Magento SUPEE6788 patches my module stop working so as per the instruction provided by magento in  http://magento.com/security/patches/supee-6788-technical-details and change config.xml 

 

    <admin>
       <routers>
          <adminhtml> 
             <args>
                <modules> 
                   <Module_Name after="Mage_Adminhtml">ModuleName_Adminhtml</Module_Name>
                </modules> 
              </args> 
          </adminhtml>
       </routers>
    </admin>

it is working with it but I want to make it compatible with magento 1.9.1 and lower how to perform it can anyone had any idea to perform it