if (window.ActiveXObject && !window.XMLHttpRequest) {
      window.XMLHttpRequest=function() {
      return new ActiveXObject((navigator.userAgent.toLowerCase().indexOf('msie 5') != -1) ? 'Microsoft.XMLHTTP' : 'Msxml2.XMLHTTP');
   };
  }//取得XMLHttpRequest对象




  /**
   * 得到参数是否重复的判断
   * param              参数值
   * paramMinLength     参数最少长度
   * url                验证路径
   * objHead            显示层 头名称
   * **/

function clickRepeat(param, paramMinLength, url, objHead){

//    alert(param);
//    alert(paramMinLength);
//    alert(url);
//    alert(objHead);

var param = param.Trim();
//alert(username);
var td_message = document.getElementById(objHead + "_div");
var view_name=document.getElementById(objHead + "_message");
var img = document.getElementById(objHead + "_img");
var req=new XMLHttpRequest();

if(param!="" && param.length>=paramMinLength){
//path是取得系统路径
      
      if (req) {
          req.onreadystatechange=function() {
           if (req.readyState==4 && req.status==200) {//判断状态，4是已发送，200已完成
                 if(req.responseText==0){
					 td_message.style.display = "block";
                      img.src = '../images/globalStyle/032.gif';
                      view_name.style.color='green';
                	 view_name.innerHTML='可以注册';
                 }else if(req.responseText==1){
					 td_message.style.display = "block";
                      img.src = '../images/globalStyle/053.gif';
                     view_name.style.color='red';
                   	 view_name.innerHTML='已经被占用';
                 }else if(req.responseText==2){
					 td_message.style.display = "block";
                     img.src = '../images/globalStyle/053.gif';
                     view_name.style.color='red';
                   	 view_name.innerHTML='包含被过滤字符';
                 }else if(req.responseText==3){
					 td_message.style.display = "block";
                     img.src = '../images/globalStyle/053.gif';
                     view_name.style.color='red';
                   	 view_name.innerHTML='请输入正确的格式';
                 }else if(req.responseText==4){
					 td_message.style.display = "block";
                     img.src = '../images/globalStyle/053.gif';
                     view_name.style.color='red';
                   	 view_name.innerHTML='请输入(半角)数字';
                 }
           }else{
			 //等待处理
			 td_message.style.display = "block";
             view_name.style.color='blue';
               img.src = '../images/globalStyle/help_16.gif';
             view_name.innerHTML='检索中...';
			   
			}
      }
                        req.open('GET', url + param);//struts

            			//req.open('POST', path+'/ajax.servlet');//servlet

                        //req.open('POST', path+'/ajax.action');//webwork


                          req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                          req.send("");//发送参数如果有参数req.send("username="+user_name);用request取得
      }
	  
}else{

	if(param.length > 0 || param.length<paramMinLength)
	{
		td_message.style.display = "block";
		view_name.style.color='red';
        img.src = '../images/globalStyle/053.gif';
        view_name.innerHTML='请输入大于 ' + paramMinLength + ' 个字符';
	}
	if(param == null || param == ""){
		td_message.style.display = "none";
    	//view_name.innerHTML='请输入会员名称';
		view_name.innerHTML = '';
	}
	
}
}