Class not found error while extending core helper
I am trying to extend the core helper class But found the below error..
Fatal error: Class 'Mage_Kishore_Kp_Helper_Data' not found
Below are the path of my files..
1. app/etc/modules/Kishore_Kp.xml
2. app/code/community/Kishore/Kp/etc/config.xml
3. app/code/community/Kishore/Kp/Helper/Data.php
These are my files..
1.Kishore_Kp.xml
<?xml version="1.0"?>
<config>
<modules>
<Kishore_Kp>
<active>true</active>
<codePool>community</codePool>
<depends>
<Mage_Core/>
<Mage_Catalog/>
</depends>
</Kishore_Kp>
</modules>
</config>
2. config.xml
<?xml version="1.0" encoding="UTF-8"?>
<config>
<modules>
<Kishore_Kp>
<version>1.0.0</version>
</Kishore_Kp>
</modules>
<global>
<helpers>
<kishore_kp>
<class>Kishore_Kp_Helper</class>
</kishore_kp>
</helpers>
</global>
<frontend>
<routers>
<kishore_kp>
<use>standard</use>
<args>
<module>Kishore_Kp</module>
<frontName>kpswitcher</frontName>
</args>
</kishore_kp>
</routers>
</frontend>
</config>
3.Data.php
<?php
class Kishore_Kp_Helper_Data extends Mage_Core_Helper_Abstract
{
const FULL_SITE_COOKIE = 'USE_FULL_SITE';
public function getMobileToDesktopUrl() {
echo "helllllo";exit;
}
}
I am calling this helper in the footer.phtml as..
<a href="<?php echo Mage::helper('kishore_kp')->getMobileToDesktopUrl() ?>">View</a>
can any one says what am I doing wrong ?
Thanks.