How to call another controller?

[eluser]Near[/eluser]
is there any easy way to do this? this is the scenario.. when i click a button in a view named ocd_view it calls a function located at the default controller named ocd_controller. the controller loads another view. named highAndLow_view and when i click a button it calls another controller named hourlyheights_controller. but when i do that the page looks at the ocd_controller istead of looking at the hourlyheights_controller...

please help. thanks

sorry for bad english..thanks