判断ios或者android

	<script type="text/javascript">
		$(function () {
			// android和iso下载链接
			var u = navigator.userAgent;
			var isAndroid = u.indexOf('Android') > -1 || u.indexOf('Adr') > -1; //android终端
			$('.dow').on('click',function () {
				if (isAndroid) {
					location.href = 'http://www.bxd365.com/app/download';
				}else{
					location.href = 'https://itunes.apple.com/us/app/bao-xian-wen-wen/id1076204248?l=zh&ls=1&mt=8';
				}
			});
		});
	</script>