this site won’t display correctly for some reason in IE. the top menu is pushed to the left and the menu_btm is pushed up to the right.

article menu section header and section has some errors such as with spacing (In firefox and safari a section is displayed that is not otherwise displayed too).

Also for the “Sign up” text button in the paragraph appears properly in Chrome, but not in other browsers (specifically in safari and IE it is overlaying the horizontal rule graphic below).

There is also a tooltip that pops up except in IE. the code that I added for that should make it have a drop shadow in every browser, but it hasn’t in Chrome on the PC..

Any ideas?