jquery ajax類

<script language="JavaScript">
function loadtel(){
    if($('tel').value.length ==0){
      alert("請輸入你要查詢的電話號碼");
      return false;
    }
     if($('tel').value.length<6){
      alert("您輸入的電話號碼不存在");
      return false;
    }
 var url = "${base}/news/telPhone/"+ $('tel').value + ".shtml";
 var myAjax = new Ajax.Request(url,
 {
  method:'post',
  onComplete:loadInAjax,
  asynchronous:true
 }
 );
  var readyState  = myAjax.transport.readyState ;  
         //alert(readyState);  
            if(readyState != 4) {  
                $("loading").style.display = "block";
                $("showsubperstock").style.display = "none";   
            }  
 
}
function loadInAjax(transport) {  
              
            var readyState = transport.readyState;  
            //alert(readyState);  
            if(readyState == 4) {  
                //alert(transport.status);  
                if(transport.status == 200) {  
                    $("loading").style.display = "none";
                    $("showsubperstock").style.display = "block";  
                }  
            }  
            a = transport.responseText;
            alert(a);   
        }  
</script>