// mozXPath [http://km0ti0n.blunted.co.uk/mozxpath/] km0ti0n@gmail.com
// Code licensed under Creative Commons Attribution-ShareAlike License 
// http://creativecommons.org/licenses/by-sa/2.5/
if( document.implementation.hasFeature("XPath", "3.0") )
{
	XMLDocument.prototype.selectNodes = function(cXPathString, xNode)
	{
		if( !xNode ) { xNode = this; } 

		var oNSResolver = this.createNSResolver(this.documentElement)
		var aItems = this.evaluate(cXPathString, xNode, oNSResolver, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null)
		var aResult = [];
		for( var i = 0; i < aItems.snapshotLength; i++)
		{
			aResult[i] =  aItems.snapshotItem(i);
		}
		
		return aResult;
	}
	
  XMLDocument.prototype.selectSingleNode = function(cXPathString, xNode)
	{
		if( !xNode ) { xNode = this; } 

		var xItems = this.selectNodes(cXPathString, xNode);
		if( xItems.length > 0 )
		{
			return xItems[0];
		}
		else
		{
			return null;
		}
	}

	Element.prototype.selectNodes = function(cXPathString)
	{
		if(this.ownerDocument.selectNodes)
		{
			return this.ownerDocument.selectNodes(cXPathString, this);
		}
		else{throw "For XML Elements Only";}
	}

	Element.prototype.selectSingleNode = function(cXPathString)
	{	
		if(this.ownerDocument.selectSingleNode)
		{
			return this.ownerDocument.selectSingleNode(cXPathString, this);
		}
		else{throw "For XML Elements Only";}
	}

}