[mochikit] a easy question in javascript help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[yuebaer]

hi guys :
            ihave a easy question ,iwant to know when i press the
minimize button ,the page invoke event so ican do the next ,i search
lots of books and pages on the web,but i can not find the property of
this use ,how  can i do this ,plz help me





                                                               thanks
alot

                 from  yuebaer