function create_ajax(){
	var ajaxxml = null;
	if(window.XMLHttpRequest){
		ajaxxml = new XMLHttpRequest();
	}else if(window.ActiveXObject){
		try{
			ajaxxml = new ActiveXObject("MSXML2.XMLHTTP");
		}catch(E){
			try{
				ajaxxml = new ActiveXObject("Microsoft.XMLHTTP");
			}catch(E){
				ajaxxml = false;
			}
		}
	}
	return ajaxxml;
}

function send_ajax(send_method,send_url,callback){
	var ajaxxml = create_ajax();
	if(ajaxxml){
		ajaxxml.open(send_method,send_url);
		ajaxxml.setRequestHeader("Content-Type","text/xml");
		ajaxxml.setRequestHeader("Content-Type","GBK");
		ajaxxml.onreadystatechange = function(){
			if(ajaxxml.readyState == 1){
				document.getElementById("focuszz").innerHTML = "正在载入咨询师信息";
			}
			if(ajaxxml.readyState == 2){
				document.getElementById("focuszz").innerHTML = "载入咨询师信息完毕";
			}
			if(ajaxxml.readyState == 3){
				document.getElementById("focuszz").innerHTML = "正在获取咨询师信息";
			}
			if(ajaxxml.readyState == 4){
				if(ajaxxml.status == 200){
					callback(ajaxxml);
				}
			}
		}
		ajaxxml.send(null);
	}

	else{
		setTimeout(send_ajax(send_method,send_url,callback),1000);
	}

}

function show_counseltor(xmlDom){
	var show_content = "";
	var responsexml = xmlDom.responseXML;
	var leftpage = parseInt(responsexml.getElementsByTagName("left")[0].getAttribute("page"));
	var rightpage = parseInt(responsexml.getElementsByTagName("right")[0].getAttribute("page"));
	var counseltors = responsexml.getElementsByTagName("counseltor");
	var bottom_url = "";
	var left_bottom = bottom_url+"btn_left.gif";
	var right_bottom = bottom_url+"btn_right.gif";
	if(leftpage==0){
		left_bottom = bottom_url+"btn_none_left.gif";
	}
	if(rightpage==0){
		right_bottom = bottom_url+"btn_none_right.gif";
	}
	show_content = "<div class=\"displayzz\" id=\"leftpage\"><img id=\"img_l\" src=\""+left_bottom+"\" alt=\"上一页\" onclick=\"go_page('"+leftpage+"')\"></div>";
	show_content += "<div id=\"descriptionzz\"><div id=\"content0\"><ul id=\"contentzz\" class=\"contentzz\">";
	for(var i=0;i<counseltors.length;i++){
		var ctitle = counseltors[i].childNodes(0).text;
		var cphoto = counseltors[i].childNodes(1).text;
		var curl = counseltors[i].childNodes(2).text;
		show_content += "<li><div id=\"teacher\"><div id=\"tephoto\"><a href=\""+curl+"\" target=\"_blank\"><img src=\""+cphoto+"\" alt=\"心理咨询师 "+ctitle+"\" /></a></div><div id=\"tetext\"><a href=\""+curl+"\" target=\"_blank\">"+ctitle+"</a></div></li>";
	}
	show_content += "</ul></div></div>";
	show_content += "<div class=\"displayzz\" id=\"rightpage\"><img id=\"img_r\" src=\""+right_bottom+"\" alt=\"下一页\" onclick=\"go_page('"+rightpage+"')\"></div>";
	document.getElementById("focuszz").innerHTML = show_content;
}

function go_page(page){
	if(page==0){
		alert("已经到头了！");
	}else{
		//send_ajax(send_method,send_url,callback,send_parse=null)
		send_ajax("get",""+page,show_counseltor);
	}
}