Xslt wysiwyg editor based browser

Question

I am trying to find a browser based wysiwyg xslt editor. He should be able to take the XML document as the source file along with the xslt stylesheet - allow editing the xslt stylesheet, and then display the resulting html result.

Is there such a browser tool? I saw several editors on the desktop while doing a Google search, but still did not support the browser.

Any help or advice is appreciated.

Thanks Tom