static/grappelli/tinymce/examples/lists/image_list.js

// This list may be created by a server logic page PHP/ASP/ASPX/JSP in some backend system.
// There images will be displayed as a dropdown in all image dialogs if the "external_link_image_url"
// option is defined in TinyMCE init.

var tinyMCEImageList = new Array(
	// Name, URL
	["Logo 1", "media/logo.jpg"],
	["Logo 2 Over", "media/logo_over.jpg"]
);