violinplot options

Hi,

I am using the function  vioplot() to generate violin plots. Now I would 
like to add a label to the y axix and a title to the diagram.
Just setting ylab didnt work. Is it possible to set such options for the 
function ?
I tried also with the function simple.violinplot, but also with this I 
couldnt set the options.

Kind Regards
Tanja