Bug 188502 Change labels in Export Report dialog
Can we consider changing the types in the drop down list in the Export Report dialog? doc to Word xls to Excel ppt to Powerpoint pdf to PDF postscript to PostScript
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
if ( !file.exists( ) )
			return file.mkdirs( );
		return true;
	}
	/**
	 * Returns the temp image folder with session id
	 * 
	 * @param request
	 * @return
	 */
	public static String getImageTempFolder( HttpServletRequest request )
	{
		String tempFolder = imageFolder;
		
		String sessionId = request.getSession( ).getId( );
		if ( sessionId != null )
			tempFolder = tempFolder + File.separator + sessionId;
		return tempFolder;
	}
	/**
	 * Clear the temp files when session is expired
	 * 
	 * @param sessionId
	 */
	public static void clearSessionFiles( String sessionId )
	{
		if ( sessionId == null )
			return;
		
		String tempFolder = documentFolder + File.separator + sessionId;