PDF reader with scroll bar

[pj123]

Hi, I am looking for a pdf reader that has a scroll bar on the side, so I can scroll the page up and down without touching the screen. I do freehand annotation while reading my technical PDFs. In the annotation mode, I can't swipe the screen. I currently use Repligo and ezpdf. None of them has a scroll bar, so every time when I need to scroll down a page, I have to exit the annotation mode. This is extremely painful especially for reading in the landscape mode which requires multiple such complicated operations for each page. Can any one let me know is there any pdf reader with a scroll bar on the side? Thanks.