| 摘要 |
Methods and systems for performing a scroll operation are disclosed. A method may include displaying a first page of a portable document format (pdf) document on a browser window, associating respective thumbnails with each of the pages in the pdf document, and displaying two or more of the respective thumbnails overlaid on the first page. The method may also include receiving an indication to scroll the pdf document in a first direction, scrolling the pages of the pdf document at a first rate in the first direction, and scrolling the respective thumbnails of each of the pages at a second rate, different than the first rate, in the first direction. The varying scroll rate of the document and its corresponding thumbnails provides the user with different viewing options to view the document when performing a scrolling operation. |
