var id_name;

	var id;

	var http_request=false;



	function set_id_name(dd){

		id_name=dd;

	}

	function set_id(dd){

		id=dd;

	}





    function send_request(url){

		http_request=false;

		if(window.XMLHttpRequest){

		 http_request=new XMLHttpRequest();

		 if(http_request.overrideMimeType){

		   http_request.overrideMimeType("text/xml");

		 }

		}

		else if(window.ActiveXObject){

			 try{

				  http_request=new ActiveXObject("Msxml2.XMLHttp");

			 }catch(e){

				  try{

				  http_request=new ActiveXobject("Microsoft.XMLHttp");

				  }catch(e){}

			 }

		}

		if(!http_request){

			 window.alert("创建XMLHttp对象失败！");

			 return false;

		}

		http_request.onreadystatechange=processrequest;

		

		http_request.open("GET",url,true);

		http_request.send(null);

  }

  

  function processrequest(){

	if(http_request.readyState==4){

		if(http_request.status==200){

	

			var string = http_request.responseText;
			

		

			if(string!="")

			{

				var arr = string.split(',');

				document.getElementById(id_name).options.length=0;

				
				//var ff = document.createElement("option");

				//		 ff.value = 0;

				//		 ff.text= "Please Choose";

				//document.getElementById(id_name).options.add(ff);

				
				for(i=0;i<arr.length;i++)

				{

					var ss = document.createElement("option");

					if(arr[i]!="")

					{

						 var arr2 = arr[i].split(':');

						 ss.value = arr2[0];

						 ss.text= arr2[1];

						 document.getElementById(id_name).options.add(ss);

					}



				}

			 }

		}

		else{

			 alert("您所请求的页面不正常！");

		}

   }

  }

  function getchild(obj,id){

	set_id_name(id);

	var ss = document.createElement("option");

			 ss.value = "loading。。。";

			 ss.text= "loading。。。";

	var sa = document.createElement("option");

			 ss.value = "";

			 ss.text= "無";

	var pid=document.getElementById(obj).value;

	if(pid!=0){

		document.getElementById(id_name).options.add(ss);

		document.getElementById(id_name).options.length=0;

		var url = doc_dir+'/lib/js/ajax_php/ajax_get_child.php?pid='+pid;
		url += "&tmp=" + Math.random();

		send_request(url);

		reobj=obj;

	}

  }