hi everyone, I never understood how facebook left column links eg welcome, newsfeeds and photos, how this things wont open new page beside it open #link, do they have any server side check client side. and second thing how they open whole page in content div, yes you can do this with javascript but they dont have onclick event on that it just a simple link that also without # how they contvert this it in # link. It will be great help if you know this and help me out to explain this thing.