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copied!<p>Maybe this script will help. This is Windows-only, though.</p> <pre><code><script language='javascript' type='text/javascript'> var javaVersion; var shell; try { // Create WSH(WindowsScriptHost) shell, available on Windows only shell = new ActiveXObject("WScript.Shell"); if (shell != null) { // Read JRE version from Window Registry try { javaVersion = shell.regRead("HKEY_LOCAL_MACHINE\\Software\\JavaSoft\\Java Runtime Environment\\"); } catch(e) { // handle exceptions raised by 'shell.regRead(...)' here // so that the outer try-catch block would receive only // exceptions raised by 'shell = new ActiveXObject(...)' alert('error reading registry'); } } } catch(e) { // Creating ActiveX controls thru script is disabled // in InternetExplorer security options // To enable it: // a. Go to the 'Tools --> Internet Options' menu // b. Select the 'Security' tab // c. Select zone (Internet/Intranet) // d. Click the 'Custom Level..' button which will display the // 'Security Settings' window. // e. Enable the option 'Initialize and script ActiveX controls // not marked as safe' activeXDisabled = true; } // Check whether we got required (1.6) Java Plugin if ( javaVersion != null && javaVersion.indexOf("1.6")) { pluginDetected = true; alert('it is installed!') } if (pluginDetected) { // show applet page } else if (confirm("Java Plugin 1.6 not found")) { // show install page alert('not found') } else { // show error page alet('error') } </script> </code></pre>

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