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
for ( int i = 0; i < children.length; i++ )
			{
				boolean success = deleteDir( new File( dir, children[i] ) );
				if ( !success )
				{
					return false;
				}
			}
		}
		
		return dir.delete( );
	}
	/**
	 * Get report parameter by given name.
	 * 
	 * @param request
	 *            http request
	 * @param name
	 *            parameter name
	 * @param defaultValue
	 *            default parameter value
	 * @return parameter value
	 */
	public static String getReportParameter( HttpServletRequest request,
			String name, String defaultValue )
	{
		assert request != null && name != null;
		String value = getParameter( request, name );
		if ( value == null || value.length( ) <= 0 )