Can someone please tell me the CSS code to use so that the floating items moves up and down the page?
Not sure what you mean by moving up and down the page, but the code I use keeps it fixed to one corner of the site, which does include coming with you when you scroll.
.floating_item {position:fixed !important; left:250px !important; top:50px !important; z-index:999 !important; margin: 0px !important; border:2px solid ;}
EDIT: forgot to tag oops