Mapquest site will not load on my computer.

I try to go to the mapquest site and it acts like the page is loaded but I only get a blank screen. I have Norton and cleaned temporary files and ran the Registry Cleanup and when I go into Mapquest the screen is still blank.

I am having the same problem as the others. One day it worked fine, but the next day the page would not load. I have changed nothing on my computer. Please help. This is the only map and direction site that is accurate.