Custom Image Browser with FCKEditor

I am trying to integrate a custom image browser with FCKeditor in ColdFusion. What I need to do is when I click on the image button on the FCKeditor tool bar it should open my custom Image browser and when an image is selected it should be inserted inthe FCKEditor.

Everything works fine but the image is not inserted. I did exactly what is mentioned in http://wiki.fckeditor.net/Developer's_G ... le_Browser.

waiting for any help...