Bug 193875 we can not get an entir url by IHTMLActionHandler
we can not get an entir url by IHTMLActionHandler, so word emitter dose not write the right url. now hyperlink drill through in word emitter doesn't work.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
public static final String PARAMETER_SEPARATOR = "&"; 
	/**
	 * The character to start the query string in the url.
	 */
	public static final String QUERY_CHAR = "?"; 
	/**
	 * Equals operator.
	 */
	public static final String EQUALS_OPERATOR = "="; 
	/**
	 * Suffix of report document.
	 */
	public static final String SUFFIX_REPORT_DOCUMENT = ".rptdocument"; 
	/**
	 * Default separator
	 */
	public static final char DEFAULT_SEP = ',';
	/**
	 * Report working folder.
	 */
	public static String workingFolder = null;
	/**
	 * Document folder to put the report files and created documents.
	 */
	public static String documentFolder = null;
	/**
	 * Image folder to put the image files
	 */
	public static String imageFolder = null;
	/**