Sets an HTML-marked text appended to installation instructions and saying how to install ActiveX Uploader in an alternative way (e.g. use a standalone installer).
var u = $au.uploader({
//...other params...
});
var ip = $au.installationProgress(u);
ip.altInstallerHtml("");
//...other params...
u.writeHtml();
Type: String
The instructions on how to install ActiveX Uploader in an alternative way.
Default value is "".