Bug 156912 Proxy problems with birt-viewer.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
{
		String resourceFolder = null;
		
		resourceFolder = getParameter( request, PARAM_RESOURCE_FOLDER );
		
		
		if ( resourceFolder == null || resourceFolder.trim( ).length( ) <= 0 )
			resourceFolder = birtResourceFolder;
		return resourceFolder;
	}
	/**
	 * Get the resource real path
	 * 
	 * @param context
	 *            ServletContext
	 * @param path
	 *            String
	 * 
	 * @return String
	 */
	public static String getRealPath( ServletContext context, String path )
	{
		
		String resourcePath = context.getRealPath( path );
		
		if ( resourcePath == null )
		{
			try
			{
				URL url = context.getResource( path );