Bug 173582 Run servlet should not be affected by values in document.[0000]
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
for ( int i = 0; i < fileName.length( ); i++ )
		{
			char c = fileName.charAt( i );
			
			if ( c < 0x00 || c >= 0x80 )
			{
				fileName = defaultName;
				break;
			}
		}
		fileName = fileName + ".pdf";  
		return fileName;
	}
	/**
	 * Reset isInitContext flag
	 */
	public static void reset( )
	{
		isInitContext = false;
	}
	/**
	 * 
	 * Check if OS system is windows
	 * 
	 * @return boolean
	 */
	protected static boolean isWindowsPlatform( )
	{
		return System.getProperty( "os.name" ).toLowerCase( ).indexOf(