How to hide top menu and disable my custom module, if field "enabled" is 0(no). Magento version 1.9
<?xml version="1.0"?>
<config>
<tabs>
<plumrocket translate="title">
<label>Plumrocket</label>
<sort_order>10</sort_order>
</plumrocket>
</tabs>
<sections>
<productlabels translate="title">
<label>Product Labels</label>
<tab>plumrocket</tab>
<backend_model>productlabels/system</backend_model>
<show_in_default>1</show_in_default>
<show_in_Website>1</show_in_Website>
<show_in_store>1</show_in_store>
<groups>
<global>
<label translate="title">Settings</label>
<sort_order>10</sort_order>
<show_in_default>1</show_in_default>
<show_in_Website>1</show_in_Website>
<show_in_store>1</show_in_store>
<fields>
<enabled>
<label translate="title">Enabled</label>
<frontend_type>select</frontend_type>
<source_model>adminhtml/system_config_source_yesno</source_model>
<sort_order>20</sort_order>
<show_in_default>1</show_in_default>
<show_in_Website>1</show_in_Website>
<show_in_store>1</show_in_store>
</enabled>
</fields>
</global>
</groups>
</productlabels>
</sections>