Add a finished HTML page in the Link plugin

I have a problem with the Link plugin in the CKeditor. I want to give the users the possibility to link to other pages on the same website. I have a finished HTML page (still from the FCKeditor) and now I want to include this HTML page when an user chooses a certain option in the select box. So it should be included in the pop up window under the select box. Do you know a possibility to do this?