Problem with webplayer and occlusion culling

Hi, My name is Danilo im working with a architecture model to a client but i never did this and i have some problems =P im tryng to use occlusion culling but doesnt work! when i look the status the tris doesnt decrease, everything is static mesh! and in chrome when i leave the webplayer to close it on the tab, the chrome freeze a little and i have to alt tab to back to normal =P

Here is the webplayer promove.tv.br/teste