Bug 137176 It takes unacceptable long time to render a report
Description: Get the attached report design, preview in report designer. It takes unacceptable long time to render a report, and users could not get the output finally. Even during the rending, the computer could not do anything else.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* @return Returns the workingFolder.
	 */
	public static String getWorkingFolder( )
	{
		return workingFolder;
	}
	/**
	 * This function is used to encode an ordinary string that may contain
	 * characters or more than one consecutive spaces for appropriate HTML
	 * display.
	 * 
	 * @param s
	 * @return String
	 */
	public static final String htmlEncode( String s )
	{
		String sHtmlEncoded = ""; 
		if ( s == null )
		{
			return null;
		}
		StringBuffer sbHtmlEncoded = new StringBuffer( );
		final char chrarry[] = s.toCharArray( );
		for ( int i = 0; i < chrarry.length; i++ )
		{
			char c = chrarry[i];
			switch ( c )
			{
				case '\t' :
					sbHtmlEncoded.append( "&#09;" );