Click event again and again

hi

i ha a movieclip named box.this box will be loaded during runtime from library to the stage .its positioned in right corner of stage. (box.x = stage.stagewidth

now what i needed is if user click the movieclip(box) it should get transformed to stage left corner (ie : box.x = 0)

if Again click on the movie clip it should movie to down left corner and next click to down right corenr… (like counterclockwise corner shift)

thanks in advance

baran