Create a content popup within Feng office

Experience with Feng Office is required. We are not using a database, user data and files are stored on the server using 'file system'. Developing required features * Next to the logo there will be a link * When clicking the link, a (lightbox) popup will open with only a textfield * Users can type in this field, and after closing the popup the text will be saved * So when users click this link again, the text is still there * This popup is unique for every user, sort of a quick notes feature [Posting and Asking of direct contact information is strictly prohibited and will get your account suspended - Freelancer.com Admin]