[Typo3] Conditions by using user functioons

[tapio]

Hi

I read this page
http://typo3.org/documentation/document-library/doc_core_tsref/userFunc/

But I didn't fully understood everything.

I woud like to create
[userFunc = be_user(ID)]

and


[userFunc = be_user_group(ID)]

the result, which I would like to get would be like

[userFunc = be_user_group(1)]
page.headerData.22 = TEXT
page.headerData.22.value =<link rel="stylesheet" type="text/css" 
href="fileadmin/template/main/css/fe-buttons_user_group_1.css" 
media="screen,projection,handheld" />
[global]

BUT the code should put to localconf.
Does TS work at all?