Receive notification of the beginning of an element.
The Parser will invoke this method at the beginning of every element in the XML document; there will be a corresponding endElement() event for every startElement() event (even when the element is empty). All of the element's content will be reported, in order, before the corresponding endElement() event.
If the element name has a namespace prefix, the prefix will still be attached. Note that the attribute list provided will contain only attributes with explicit values (specified or defaulted): #IMPLIED attributes will be omitted.
@param ns The namespace of the node
@param localName The local part of the qualified name
@param name The element name.
@param atts The attributes attached to the element, if any.
@see #endElement
@see org.xml.sax.Attributes