增加对猎豹浏览器判断，如果是猎豹浏览器则不显示安装按钮

Web12306/js/ui/widget_message_popup.js

@@ -138,21 +138,20 @@
 		});
 	};
 	exports.showNonExtensionInstall = function () {
-		$.showModalDialog("您需要安装<u>猎豹浏览器</u>和<u>最新版12306订票助手扩展</u>才可以使用极速版订票。请安装后刷新此页面 :-)", {
-			image: "/images/cat.png",
-			buttons: [
-				{
-					text: "安装猎豹浏览器",
-					type: "primary",
-					callback: function () {
-						window.open("http://dl.liebao.cn/coop/KSBrowser_12306.exe");
-						return false;
-					}
-				},
+		var isLb = navigator.userAgent.indexOf("LBBROWSER") != -1;
+		var btns = [
+			{
+				text: "安装猎豹浏览器",
+				type: "primary",
+				callback: function() {
+					window.open("http://dl.liebao.cn/coop/KSBrowser_12306.exe");
+					return false;
+				}
+			},
 			{
 				text: "安装扩展",
 				type: "primary",
-				callback: function () {
+				callback: function() {
 					window.open("http://12306.fishlee.net/crx");
 					return false;
 				}
@@ -160,12 +159,18 @@
 			{
 				text: "刷新",
 				type: "default",
-				callback: function () {
+				callback: function() {
 					self.location.reload();
 					return false;
 				}
 			}
-			],
+		];
+		if (isLb)
+			btns.unshift(0);
+
+		$.showModalDialog("您需要安装" + (isLb ? "" : "<u>猎豹浏览器</u>和") + "<u>最新版12306订票助手扩展</u>才可以使用极速版订票。请安装后刷新此页面 :-)", {
+			image: "/images/cat.png",
+			buttons: btns,
 			closeOnAction: false
 		});
 	};