Hello, everyone. I am a first time user here. I got a problem and hope I can find an answer here. My servlet generates xhtml. When I test it, the browser treats it as html and can not show it properly. To show it properly the browser needs to invoke a browser plugin (Internet Explorer with MathPlayer plugin to show MathML). Obviously the browser does not invoke the plugin. When I save the generated output as a static file with xhtml extension, the browser shows the MATHML(math formulas) part correctly. I can not set ContentType to "text/xhtml" as there is no such MIME type. Is there a workaround for this? Thanks for any idea?