Displaying of file types and tags in damadmin search

Hi,

In search tab of damadmin there are File Types and Tags. If I expand the Images or anything in file types it is opening all the sub options under it which is annoying. Same problem with Tags. If I expand any option in Tags or File Types it should open one level at a time which looks good. 

Can some one please help me on this.

Thanks,

Srinivas.