document.domain="chinaa2z.com";
var request = false;
try {
  request = new XMLHttpRequest();
} catch (trymicrosoft) {
  try {
    request = new ActiveXObject("Msxml2.XMLHTTP");
  } catch (othermicrosoft) {
    try {
      request = new ActiveXObject("Microsoft.XMLHTTP");
    } catch (failed) {
      request = false;
    }
  }
}

if(!request){
alert("Error initializing XMLHttpRequest!");
  }
  
//=================以上初始化xmlHttpRequest;
function pre()
{
	 prenum=prenum-1;


if(prenum>0&&prenum<5){
     var url = "/kungfu/?c=index&f=getpic&pid=" + prenum+"&"+Math.random();
     request.open("GET", url, true);
     request.onreadystatechange = inserdiv;
     request.send(null);
	 }else{
	//document.getElementById("top_2").innerHTML ="无下级分类";
	prenum=5;
	pre();
	 }
}

function next()
{
	 prenum=prenum+1;

if(prenum>0&&prenum<5){
     var url = "/kungfu/?c=index&f=getpic&pid=" + prenum+"&"+Math.random();
     request.open("GET", url, true);
     request.onreadystatechange = inserdiv;
     request.send(null);
	 }else{
	//document.getElementById("top_2").innerHTML ="无下级分类";
	prenum=0;
	next();
	 }
}

function inserdiv() {

if(request.readyState == 1){
document.getElementById("pic1").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
document.getElementById("pic2").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
document.getElementById("pic3").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
document.getElementById("pic4").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
}
if(request.readyState == 2){
document.getElementById("pic1").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
document.getElementById("pic2").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
document.getElementById("pic3").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
document.getElementById("pic4").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
}
if(request.readyState == 3){
document.getElementById("pic1").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
document.getElementById("pic2").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
document.getElementById("pic3").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
document.getElementById("pic4").innerHTML ="<img src='/images/system/ajax.gif' style='width:16px;height:16px;'/>";
}

     if (request.readyState == 4) {
       if (request.status == 200) {
         var response = request.responseText.split("|");//服务器端PHP程序发送回来两个数据并用“|”分割，这里用split方法取得数据存放到数组
         document.getElementById("s1").style.backgroundColor='#DB7070';			
		 document.getElementById("pic1").innerHTML =response[0];
		 document.getElementById("pic2").innerHTML =response[1];
		 document.getElementById("pic3").innerHTML =response[2];
		 document.getElementById("pic4").innerHTML =response[3];
		 

			switch(response[4]){ 
			case '1': 
				for(i=1;i<5;i++){
				document.getElementById("s"+i+"").style.backgroundColor='#ffffff';
				}
				document.getElementById("s1").style.backgroundColor='#DB7070';
				

			break; 
			
			case '2':
			for(i=1;i<5;i++){
				document.getElementById("s"+i+"").style.backgroundColor='#ffffff';
				}
				document.getElementById("s2").style.backgroundColor='#DB7070';
			break;
			 
			case '3': 
			for(i=1;i<5;i++){
				document.getElementById("s"+i+"").style.backgroundColor='#ffffff';
				}
				document.getElementById("s3").style.backgroundColor='#DB7070';
			break;
			
			case '4': 
			for(i=1;i<5;i++){
				document.getElementById("s"+i+"").style.backgroundColor='#ffffff';
				}
				document.getElementById("s4").style.backgroundColor='#DB7070';
			break;
			
			default: 
				//document.getElementById("s1").style.backgroundColor='#DB7070';
			} 
			
		 document.getElementById("text1").innerHTML =response[5];
		 document.getElementById("text2").innerHTML =response[6];
		 document.getElementById("text3").innerHTML =response[7];
		 document.getElementById("text4").innerHTML =response[8];			

//		 var t=new Array(9);
//		 t[0]='test';
//		 t[1]='222';
//		 alert(t[0]);
//		 alert(t[1]);
//		 alert(t.length);
		        } else
         alert("status is " + request.status);
     }

}