1. Choose Tools from the menu.
2. From the resulting drop-down menu, choose Manage Add-ons, followed by Enable Add-ons....
Back1. Open "Safari" > "Preferences".
2. Choose "Enable plug-ins" and "Enable java", hook on.
Back1. Launch Google Chrome browser. Make sure you are using latest Chrome (6.0 or above), else download from google.com/chrome
2. Type chrome://plugins/ in the address bar and hit the Enter key.
3. Click Disable next to Chrome PDF viewer.
4. Click Enable next to Chrome PDF viewer.
BackFrom the "Tools" menu select "Add-ons", the click on the "Plugins" icon at the top right:
Click on the Adobe Reader brick (it may say 8.0. 9.0 or X). To disable the plugin ensure that the button on the right says Disable. If it says Enable, click it.
Back1. Launch Opera browser.
2. Type opera:plugins in the address bar and hit the Enter key.
3. Click Enable next to Adobe Acrobat.
Back1. Can't download or install Reader
3. Can't view a PDF on the web