Bug 168304 Context root issue when set to other BIRT Web Project.[0603]
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/taglib/component/ViewerField.java
* <li>position</li>
 * <li>style</li>
 * <li>height</li>
 * <li>width</li>
 * <li>left</li>
 * <li>top</li>
 * <li>frameborder</li>
 * <li>reportDesign</li>
 * <li>reportDocument</li>
 * <li>reportletId</li>
 * <li>pattern</li>
 * <li>target</li>
 * <li>bookmark</li>
 * <li>locale</li>
 * <li>format</li>
 * <li>svg</li>
 * <li>rtl</li>
 * <li>allowMasterPage</li>
 * <li>allowPageBreak</li>
 * <li>resourceFolder</li>
 * <li>maxRowsOfRecords</li>
 * <li>forceOverwriteDocument</li>
 * <li>forceParameterPrompting</li>
 * <li>showTitle</li>
 * <li>showToolBar</li>
 * <li>showNavigationBar</li>
 * <li>forceIFrame</li>
 * </ol>
 */
public class ViewerField implements Serializable, Cloneable