Shoutbox

ok, this is one weird problem, and hopefully my last with this site... strangely enough, the div's in my code mis-behave and mis-place themselves all over the page, all on a random basis..

what the page is supposed to look like:


first problem:


second problem:


third problem:


all my code is valid as well (well, the xhtml has warnings because i am using the color=".." tag, but that should affect the divs, its in a <hr> tag)

any ideas what would be causing this?? thanks...