Sets a CSS class name to apply it to the installation screen. This class should be declared in a source code of the page ActiveX/Java Uploader is added to, or in the external CSS file linked to this page.
var u = $au.uploader({
//...other params...
});
var ip = $au.installationProgress(u);
ip.instructionsCssClass("");
//...other params...
u.writeHtml();
Type: String
The CSS class name to apply it to the installation screen.
Default value is "".