Wordpress template small modifications

Hello guys, I have this Wordpress template [login to view URL] . I want to add drop down menu to the upper menu and left side menu ( left side menu will have some categories, and when i press on each category to lower the subcategory). And i want to add a scroll option for the middle content of the page, so when i scroll down, just the middle of the page will scroll. And 2 or 3 small modification like this. This is a fast and easy job if you know Wordpress. I need this fast.