src/org/tiefaces/components/websheet/utility/ChartUtility.java
private static String getChartIdFromChildNodeAttributes(
            final NamedNodeMap attrs) {
        for (int j = 0; j < attrs.getLength(); j++) {
            Attr attribute = (Attr) attrs.item(j);
            if ("r:id".equalsIgnoreCase(attribute.getName())) {
                return attribute.getValue();
            }
        }
        return null;
    }
private static String getChartIdFromChildNodeAttributes(
            final NamedNodeMap attrs) {
        for (int j = 0; j < attrs.getLength(); j++) {
            Attr attribute = (Attr) attrs.item(j);
            if ("r:id".equalsIgnoreCase(attribute.getName())) {
                return attribute.getValue();
            }
        }
        return null;
    }
Gets the chart id from child node attributes.

@param attrs
the attrs
@return the chart id from child node attributes