for (node=inicio ; node ; node = node->next) {
if (node->type == XML_ELEMENT_NODE) {
if (strcmp(node->name, "ARTICULO") == 0) {
for (node=inicio ; node ; node = node->next) {
if (node->type == XML_ELEMENT_NODE) {
if (strcmp(node->name, "ARTICULO") == 0) {