Bug 154178 Support projectFolder in BIRT viewer
If the report supports projectFolder, the viewer also need to enhance for this feature.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* @param s
	 *            UTF-8 string
	 * @return
	 */
	protected static String toISOString( String s )
	{
		String ISOString = s;
		if ( s != null )
		{
			try
			{
				ISOString = new String( s.getBytes( UTF_8_ENCODE ),
						ISO_8859_1_ENCODE );
			}
			catch ( UnsupportedEncodingException e )
			{
				ISOString = s;
			}
		}
		return ISOString;
	}
	/**
	 * Convert ISO-8895-1 string into UTF-8.
	 * 
	 * @param s
	 *            ISO-8895-1 string
	 * @return
	 */
	protected static String toUTFString( String s )
	{