I’m not sure of all the implications of this, but to make the layout more friendly and responsive, try removing the red lines below and modifying the last line as shown in blue:
It’s being caused by the filters you have in there for IE. My advice would be to get rid of them and never touch them again. They seem to cause all sorts f problems. for older IEs, you could use a transparent background image instead.
Do you have any suggestions for keeping the “view complete collection” link on the photo page (http://masonsklut.com/photo) visible when the browser dimensions are scaled?