OnClick event for the Mainmenu? (1 Viewer)

[MoPhat]

Hi, im searching a way to get the onclick event from the main menu for my plugin.

what i need is only a startmenu entry , but without a skinfile.
if i click on the mainmenu item then this should execute a method in the plugin, is this possible wihtout having a skin file and a button?

thanks for a hint
MoPhat