joomla - Jooma Custom Component Router.php not being called -

i'm using joomla 3.1.

i'm having strange issue router.php file in component.

i have basic router.php file, not doing yet, before add features need working on basic stuff first.

i have menu item component set item type. viewing homepage shows view created.

for links, if use following:

echo jroute::_('index.php?option=com_vacations&view=test&cat=123'); 

i this:

http://mysite/en/component/vacations/?view=test&cat=123 

i not want "component/vacations" shown however. i've tried this:

echo jroute::_('index.php?view=test&cat=123'); 

and get:

http://mysite/en/?view=test&cat=123 

seemingly correct, second method never touches router.php. means cannot alter display like:

http://mysite/en/test/123 

how can fix url parsed through router.php?

when use jroute create links application create full query in first code:

echo jroute::_('index.php?option=com_vacations&view=test&cat=123'); 

router work router when write routing functions. without rooter return links using default joomla routing markup (like http://mysite/en/component/vacations/?view=test&cat=123). code joomla component com_weblinks. understand whole process. can find here: /components/com_weblinks/router.php