var xmlSrc;
var root;

if( document.implementation.hasFeature("XPath", "3.0") )
{
   // prototying the XMLDocument
   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;
   }

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



//根据给定的值创建新的下拉对象

function createXMLHttpRequest() {
    if (window.ActiveXObject) {
        oXmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    } 
    else if (window.XMLHttpRequest) {
        oXmlHttp = new XMLHttpRequest();
    }

}


function CreateXMLDOM()
{
	createXMLHttpRequest();
	oXmlHttp.open( "GET", "manage/xml/ProductTypeList.xml", false ) ;
	oXmlHttp.send(null) ;
	root = oXmlHttp.responseXML.documentElement;
}
CreateXMLDOM()

function funCreatePullMenu(passPid,ChildId)
{
	
	var currentItems = root.selectNodes("//Troot/Item[@pid = " + passPid + "]");
	var iItems = currentItems.length;
	var k=0;
	if(iItems > 0)
	{

		
		var pdiv = document.createElement("DIV");
		pdiv.id="piv" + passPid;
		pdiv.className = "piv" + ChildId;
		pdiv.name = "piv" + passPid;
		if(passPid>0)
		{
		     pdiv.style.display="block";
			 document.getElementById("div" + passPid).appendChild(pdiv);
		}
		else
		{
			 document.getElementById("odiv").appendChild(pdiv);
		}
		for(var i = 0; i < iItems; i++)
		{
			var _id = currentItems[i].attributes[0].value;
			var newChild = document.createElement("DIV");
			newChild.id="div" + _id;
			newChild.className = "div" + ChildId;
			newChild.name = "div" + _id;
			
			var _v ;
			if(CheckPullMenu(_id))
			{
				_1= _id
				_v = "<a href='javascript:showsubmenu(" + _1 + ")'> " +currentItems[i].firstChild.data + "</a>";
			}
			else
			{
				_v = "<a href='ProductList.aspx?type=" + _id + "'>"+ currentItems[i].firstChild.data +"</a>";
			}

			newChild.innerHTML=_v;
			
			
			document.getElementById("piv" + passPid).appendChild(newChild);
			if(CheckPullMenu(_id))
			{
			funCreatePullMenu(_id,ChildId+1)
			}
		}
	}
}



function CheckPullMenu(passPid)
{
	
	var currentItems = root.selectNodes("//Troot/Item[@pid = " + passPid + "]");
	var iItems = currentItems.length;
	if(iItems > 0)
	{
		return true;
	}
    else
	{
		return false;
	}

}

function showsubmenu(sid)
{
	var whichEl = document.getElementById( "piv" +sid);
	if (whichEl.style.display == "none")
		{
           whichEl.style.display="block";
		}
	else
		{
		   whichEl.style.display="none";
		}
}
window.onload = function(){ funCreatePullMenu(0,0); }


function SearchFrom(InputID,SearchType)
{
	_iv=document.getElementById(InputID);
	_it=document.getElementById(SearchType);
	if(_iv &&　_iv.value!="")
	{
		location.href="ProductList.aspx?keyword=" + _iv.value +"&SearchType=" + _it.value;
	}
	else
	{
	    alert("请输入商品名！");
	}
}