Thanks for the tip:
Amateras HTML Editor for Eclipse
EclipseHTMLEditor is an Eclipse Plugin for HTML / JSP / XML / CSS / DTD / JavaScript editing. This plugin is required by StrutsIDE and FacesIDE.
- HTML/JSP/XML/CSS/DTD/JavaScript Highlighting
- HTML/JSP Preview
- HTML/JSP/XML Validation
- Contents Assist
- Wizards for creating HTML/JSP/XML files
- And many more powerful features…
Works fine with Eclipse Galileo.
I am using it now along with the Google Eclipse Plugin for GWT development/ training.