Acrobat Viewer for the Mac Only Likes Safari

If you want to view Adobe Acrobat PDF files within the Apple Safari web browser, you must be using Mac OS X 10.4.3 or later. Adobe says that the Adobe PDFViewer for Mac OS X won't work on older versions. Also, it will only work within Safari; it doesn't work with Firefox or Opera running on a Mac. See http://www.adobe.com/support/techdocs/333545.html for configuration information.