External XUL Files How to include them inside a main XUL files

I'm creating an XUL page that contains many sections. To keep the coding looking clean, I decided to separate them into different files. I used iframes to do this.

However, when I use an iframe, the external XUL files all have to have their own doc-type, style-sheets, all those other declarations, and worst of all, their own JavaScript files. The JavaScript functions in the different XUL files are not carried over to the main XUL file, which means they cannot interact with each other.

So, is there any other way to include external XUL files? The main requirement I'm looking for is that their JavaScript codes should be able to interact with each other.

I don't know if this will work, but you could try using the php include() function.

<? include("pagename.xul"); ?>

Actually, I can't use PHP for the pages I'm making. It won't be hosted on my server. I can only JavaScript and XUL.But if I could use PHP, I would have done what you suggested too.