public void error(String message, String sourceName, int line, String lineSource, int lineOffset) {
			if (line < 0) {
				System.err.println("[ERROR] HtmlCompressor: \"" + message + "\" during JavaScript compression");
			} else {
				System.err.println("[ERROR] HtmlCompressor: \"" + message + "\" at line [" + line + ":" + lineOffset + "] during JavaScript compression" + (lineSource != null ? ": " + lineSource : ""));
			}
		}