Flash Player Version Detector
Flash cannot be detected in Netscape 2, Explorer 3 and 4 on Mac,
Konqueror and Ice Browser.
The Flash version cannot be detected in Opera 5 on Mac and Linux
Flash plugin and, if so, which version.
After you have detected the presence/absence of the plugin, you can take appropriate measures.
First of all, let's see if you have Flash installed and, if so, which version: