var wechat_checkST1 = null, wechat_checkCount1 = 0;

function check_order(order_id){
   $.get('&order_id='+order_id, function(s) {
      if(s=='1'){
         clearTimeout(wechat_checkST1);
         $("#pay_success").show();
         $("#show_wx").hide();
         setTimeout(function(){
            window.location.href="";
         },2000)
      }
   });
}


wechat_checkST1 = setInterval(function(){
   check_order(order_id);
}, 3000);