This is really weird (I got your screenshot). Try this:
1) Close all your editors
2) Close all your projects
3) Shut down MyEclipse
4) Edit the shortcut you use to start it up and add the -clean command line parameter as shown here:
http://www.myeclipseide.com/FAQ+index-myfaq-yes-id_cat-30.html#343
5) Start MyEclipse back up, open your project and the file again. Did it work?
Also double check if the project has JSF capabilities added to it, you can right click on the project and go to MyEclipse menu, do you see “Add JSF Capabilities” listed? If so, then this is most likely the problem.