function displayAll(data){
	for(var key in data){
		if(data[key].MacAddr!='undefined'&&data[key].Slot!='undefined'){
			if(data[key].online==0){
				var spanid = data[key].MacAddr+"_"+data[key].Slot+"_"+"sp";
				var divid = data[key].MacAddr+"_"+data[key].Slot;
				document.getElementById(divid).onclick=devofline;
				document.getElementById(spanid).innerHTML = document.getElementById(spanid).innerHTML+"(离线)";
			}
		}
	}
}
function devofline(){
	alert('此设备已离线，请查看其他视频');
}