public static boolean isSelXmlNode(Element elem)
	{
		NodeList childrens = elem.getElementsByTagName(XmlFunction.ATTRIBUTESGRP);
		if ((elem.getNodeName().equals(XmlFunction.ATTRIBUTESGRP) || 
			 elem.getNodeName().equals(XmlFunction.ATTRIBUTES)) &&
			childrens.getLength() > 1 && 
			elem.getAttribute(XmlFunction.CONSTRAINT).equals("Single"))
			return true;
		else
			return false;
	}