If you can only see the first page of an eBook open in Adobe Reader or a new PDF is opened each time you turn an eBook page, this is probably due to a setting in Adobe Reader (or your PDF reader.) To correct this, change your setting to open PDFs within your web browser's window.
To change this setting in Adobe Reader:
FireFox users may need to adjust the browser settings to open PDFs within the browser.
To adjust the FireFox browser settings:
Select Options from the Tools menu in FireFox.
Select Applications in the resulting Options window.
Click Portable Document Format in the Content Type column.
Select Use Adobe Acrobat (in FireFox) in the drop-down menu to the right of Portable Document Format.