Removed iPhone app graphic from layouts.
Added DoubleClick code to replace static banner graphics.
Removed 180x150 ads from left sidebar throughout.
Adjusted top menu to remove images. First pass at styling as text.
Updated footer copyright block.
Adjusted footer.
Replaced hard-coded Facebook content in header with partial view.
Fixed trailing 'close comment'
Adjusted menu styles.
Adjusted menu styles. Added empty spacer element to menu UL. Added DFP Javascript to head.
Updated ad units with new placement codes from Victor. Misc. style tweaks.
Adjusted layouts to incorporate odd size square ad unit.
Adjusted menu styles to show hover state.
Merged changes from robert_layout_edits into master.