code: public void writeDoubleAttribute(String prefix, String namespaceURI, String localName, double value) throws Exception {
  		this.attribute(namespaceURI, localName, Double.toString(value));
  
  	}
docs: Write double attribute.
  
  @param prefix the prefix
  @param namespaceURI the namespace URI
  @param localName the local name
  @param value the value
  @throws Exception the exception