I must say it is one of the worst designed webpages I've ever come across Firefox manages to render it properly but you have to reduce text size to bare minimum to get rid of the horizontal scroll bars!
IE text won't go small enough to eradicate it completely.
If you add a new module it gets shifted to a position right below the far left column...so if you add new modules they all end up stacked on top of each other on the left of page and the vertical scroll bar indicator gets smaller and smaller!
You have to fiddle about dragging and dropping them into whatever position you need them in...best advice ....add one at a time and position it before adding more!