ActiveState Community

This extension adds a preview tab to the bottom panel and a toolbarbutton/tools menu item to preview in a new window.

It loads the chrome.manifest files from all open projects in order to prevent missing entity,skin, & js errors which would otherwise cause the preview to look wrong/not work. You can also add other chrome.manifest files separated by a ';' in the xulpreview.manifest.locations preference via about:config.

You can set how long it waits until it refreshes the preview by changing xulpreview.timeout

You can use this macro to access about:config, http://community.activestate.com/forum-topic/launch-komodos-about-conf

I uploaded it as an attachment, hopefully that will show up.