Javascript Erorr for Portal Content Box

Hi All,

We have EP 7.0, When i log into the portal and get into the portal content administrator role, i am getting the javascript error. i am not able to see the directory/tree structure of whole portal content.

could anyone let me konw how to overcome this error?

My IE Version is 6.0.2800.1106.xpsp2.050301-1526CO

Thanks,

Raags