try refreshring a few times
check the internet connection
try using internet explorer or firefox to see if its a problem with all browsers or just crome (internet explorer comes with all windows pcs which most people have and im assuming you have too) just type in the windows serarch internet explorer (to get there xp: start search, vista and 7: start then there will be a search bar at botum left of start)
try updading shockwave player (think thats what it uses) prob won't do anything but hey why not try?
Edit: sorry i believe it is flash not shockwave