Bug 155493 [Deploy] Pictures and chart pictures are lost when preview on Weblogic Server using WAR deploy
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* Equals operator.
	 */
	public static final String EQUALS_OPERATOR = "="; 
	/**
	 * Suffix of report document.
	 */
	public static final String SUFFIX_REPORT_DOCUMENT = ".rptdocument"; 
	/**
	 * File package name to store the documents.
	 */
	protected static final String DOCUMENTS_DIR = "documents";
	/**
	 * Report working folder.
	 */
	public static String workingFolder = null;
	/**
	 * Document folder to put the report files and created documents.
	 */
	public static String documentFolder = null;
	/**
	 * Preview report max rows
	 */
	public static int maxRows;
	/**
	 * Current web application locale.
	 */
	protected static Locale webAppLocale = null;
	/**
	 * Flag indicating that if user can only access the file in working folder.
	 */