function visit() {
	$.ajax( {
		url : "frontPage/visit",
		type : "post",
		dataType : "json",
		success : function(json) {
			$.each(json.al, function(i, value) {
				$("#visit").append("<img src='images/n" + value + ".gif'/>");
			});
		},
		error : function() {
			//	$("#visit").attr("href", "");
	}
	});
}

function road() {
	$.ajax( {
		url : "frontPage/road",
		type : "post",
		dataType : "json",
		success : function(json) {
			$("#roadNotice").empty();
			$.each(json.als, function(i, value) {
				var co = "";
				if (json.als[i].color == "0") {
					co = "green";
				} else if (json.als[i].color == "1") {
					co = "orange";
				} else if (json.als[i].color == "2") {
					co = "red";
				}
				var st = "";
				if (json.als[i].status == "0") {
					st = "畅通";
				} else if (json.als[i].status == "1") {
					st = "排队";
				} else if (json.als[i].status == "2") {
					st = "拥堵";
				}
				$("#roadNotice").append(
						"•&nbsp;&nbsp;<font size='2' color='" + co + "'>[" + st
								+ "][" + json.als[i].discription + "]"
								+ json.als[i].time + ""
								+ "<img src='images/news.gif'></font><br>");
			});
		},
		error : function() {
		}
	});
}