我的自定义管理模块的URL错误

I have created a custom module with a grid in Magento admin panel, it is working perfectly. My doubt is about the URL. For the default Magento module, I am getting the URL as:

magento_source/index.php/admin/cms_page/index/key/8b14fb90d8d50c24c0da008db9fd1672/

But for my custom module, I am getting the following url:

magento_source/index.php/demo/adminhtml_demo/index/key/fc732c9223b88a80ca1b17b2a0f12c95/

Instead of

magento_source/index.php/admin/adminhtml_demo/index/key/8b14fb90d8d50c24c0da008db9fd1672/

What can I do to fix this?

My config.xml file:

<?xml version="1.0"?>
   <config>    
    <modules>
    <Blazedream_Demo>
        <version>1.6.2.0.4</version>
    </Blazedream_Demo>
  </modules>
 <frontend> 
    <routers> 
        <demo> 
            <use>standard</use> 
            <args> 
                <module>Blazedream_Demo</module> 
                 <frontName>demo</frontName> 
            </args> 
        </demo> 
    </routers> 
    <layout>
        <updates>
            <demo>
                 <file>demo.xml</file>
             </demo>
         </updates>
     </layout>
 </frontend>
  <admin>
     <routers>
         <demo>
         <use>admin</use>
         <args>
            <module>Blazedream_Demo</module>
            <frontName>demo</frontName>

        </args>
        </demo>
    </routers>
</admin>

<adminhtml>
<menu>
    <demo module="demo">
        <title>Demo</title>
        <sort_order>71</sort_order>
        <children>
            <items module="demo">
                <title>Manage Items</title>
                <sort_order>0</sort_order>
                <action>demo/adminhtml_demo</action>
            </items>
        </children>
    </demo>
</menu>
<acl>
    <resources>
        <all>
        <title>Allow Everything</title>
        </all>
        <admin>
            <children>
                <demo>
                    <title>Demo Module</title>
                    <sort_order>200</sort_order>
                </demo>
            </children>
        </admin>
    </resources>
</acl>
<layout>
    <updates>
        <demo>
            <file>demo.xml</file>
        </demo>
    </updates>
</layout>
</adminhtml> 
<global>
    <models>
        <demo>
            <class>Blazedream_Demo_Model</class>
            <resourceModel>demo_mysql4</resourceModel>
        </demo>
        <demo_mysql4>
            <class>Blazedream_Demo_Model_Mysql4</class>
                <entities>
                    <demo>
                        <table>demo</table>
                    </demo>
                </entities>
        </demo_mysql4>
    </models>
    <events> 
     <demo_save_before>
        <observers>
            <blazedream_demo_save_observer>
               <type>singleton</type>
               <class>demo/observer</class>
               <method>demo_save_before</method>
            </blazedream_demo_save_observer>
        </observers>
    </demo_save_before>
    </events> 
    <resources>
        <demo_setup>
            <setup>
                <module>Blazedream_Demo</module>
            </setup>
            <connection>
                <use>core_setup</use>
            </connection>
        </demo_setup>
        <demo_write>
            <connection>
                <use>core_write</use>
            </connection>
        </demo_write>
        <demo_read>
            <connection>
                <use>core_read</use>
            </connection>
        </demo_read>
    </resources>
    <blocks>
        <demo>
            <class>Blazedream_Demo_Block</class>
        </demo>
    </blocks>
    <helpers>
        <demo>
            <class>Blazedream_Demo_Helper</class>
        </demo>
    </helpers>
 </global>   
 </config>

Can anyone help me? Thanks in advance.

if you use admin router something like below code then it will generate url what you want. this code is get default admin router.

<admin>
        <routers>
            <adminhtml>
                <args>
                    <modules>
                        <Simbeez_Ponochange before="Mage_Adminhtml">Simbeez_Ponochange_Adminhtml</Simbeez_Ponochange>
                    </modules>
                </args>
            </adminhtml>
        </routers>
</admin>