Many of the documents on this site are in PDF format. To read them, you may need to install a PDF reader on your computer.
Adobe PDF reader can be obtained free - just visit the Adobe Acrobat Reader (external link) website.
If you have problems opening a PDF, you may try refreshing the blank page in your browser. In Internet Explorer you can do this by pressing the F5 key. You can also try right-clicking the PDF name and selecting 'save target as' from the resulting menu. Save the file onto your hard drive and open using a PDF reader.
You can download free software from browser providers to make sure the version you are using is the most up to date.