*/
protected String extractXSLProcessingInstruction(Document doc) {
Node child = doc.getFirstChild();
while (child != null) {
if (child.getNodeType() == Node.PROCESSING_INSTRUCTION_NODE) {
ProcessingInstruction pi
= (ProcessingInstruction)child;
HashTable table = new HashTable();
DOMUtilities.parseStyleSheetPIData(pi.getData(),
table);
Object type = table.get(PSEUDO_ATTRIBUTE_TYPE);
if (XSL_PROCESSING_INSTRUCTION_TYPE.equals(type)) {
Object href = table.get(PSEUDO_ATTRIBUTE_HREF);