MODxAPI and image paths

Hi,

I’m quite new to MODx and found interest in the MODxAPI function as explained here:

http://wiki.modxcms.com/index.php/MODx_site_menu_in_external_PHP_app


It works so far, but if I want to include images with the TinyMCE the image paths are relative to the "assets" folder.

So if I have an external page from which I call (include) the MODxAPI pictures have paths like http://mysite.com/no_modx_pages/assets/image.jpg

This doesn’t work, cause "assets" is under http://mysite.com/modx/assets.

Is it possible to change this behavoiur?

Thanks
Stefan