//计划任务ajax轮询方式
function msg_sender_fun()
{
    if(!request_time)request_time=10000;
	window.clearInterval(sender);
	$.ajax({
		url: APP+"Home/Cron/index.html",
		success:function(data)
		{
			sender = window.setInterval("msg_sender_fun()",request_time);
		}
	});
}
var sender = window.setInterval("msg_sender_fun()",request_time);	