If you want to check whether your visitor has the Cortona 3D viewer plugin installed in the browser, you can use the following javascript:
<script type="text/javascript"> var cortonaPossible = isWin;// is the plugin available for this platform var cortonaInstalled = false;// is the plugin actually installed var cortonaChecked = false;// if 'cortonaPossible': did we do a check to find out if we have the plugin installed. This in case of new browsers which are not supported by this check
var isIE = !!(navigator.appVersion.indexOf("MSIE") != -1); var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false; if (cortonaPossible) { cortonaChecked = true; if (navigator.plugins && navigator.plugins.length) { for (var i = 0; i < navigator.plugins.length; i++) { if (navigator.plugins[i].name.toLowerCase().indexOf('cortona3d') > -1) cortonaInstalled = true; } // detect VRML and X3D plugins in Microsoft Internet Explorer, only with Windows // copied from http://cic.nist.gov/vrml/vbdetect.html } else if (navigator.appName == "Microsoft Internet Explorer" && isWin) { // IEDetectObject is used to detect ActiveX Controls document.writeln('<SCRIPT LANGUAGE="VBScript">'); document.writeln('function IEDetectObject(activeXControlName)'); document.writeln(' On Error Resume Next'); document.writeln(' IEDetectObject = IsObject(CreateObject(activeXControlName))'); document.writeln('End function'); document.writeln('</SCR' + 'IPT>'); if (IEDetectObject('Cortona.Control.1')) cortonaInstalled = true; } else cortonaChecked = false; } </script>
After having included the script above in your web page, you can use the following script in the body of your website to yes/no display the Cortona 3D plugin:
<script type="text/javascript"> if (cortonaInstalled) { document.write('<iframe src="cortona3d-page.html" width="100%" height="300" frameborder="0"></iframe>'); } else if (cortonaPossible) { document.write('<div class="alert alert-warning">In order to show you 3D content, you will need to <a href="http://www.cortona3d.com/cortona3d-viewers" target="_blank">install the Cortona3D plugin</a>. Please click the <a href="http://www.cortona3d.com/cortona3d-viewers" target="_blank">Install link</a> to start installation.<br>After installation, please <a href="javascript:self.location.reload()">reload this page</a>.</div>'); } else { document.write('<div class="alert alert-error">We probably cannot show you the 3D contents on this page, due to plugin incompatibilities. Maybe there <i>is<'+'/i> a compatible plugin; therefor please try to <a href="http://www.cortona3d.com/cortona3d-viewers" target="_blank">install the Cortona3D plugin</a>.<br>If installation succeeded, please <a href="javascript:self.location.reload()">reload this page</a>.</div>'); } </script>
Thanks to the source code of http://cic.nist.gov/vrml/vbdetect.html!
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