企业微信自建应用的H5页面，如何禁用右上角分享和转发等功能。原先在微信上生效的js代码在企业微信上无效：

$(function() {
	/*禁用微信分享功能 */
	function onBridgeReady() {
		WeixinJSBridge.call('hideOptionMenu');
	}


	if (typeof WeixinJSBridge == "undefined") {
		if (document.addEventListener) {
			document.addEventListener('WeixinJSBridgeReady', onBridgeReady,
					false);
		} else if (document.attachEvent) {
			document.attachEvent('WeixinJSBridgeReady', onBridgeReady);
			document.attachEvent('onWeixinJSBridgeReady', onBridgeReady);
		}
	} else {
		onBridgeReady();
	}
	if (isWeixin) {
		window.alert = function(name) {
			var iframe = document.createElement("IFRAME");
			iframe.style.display = "none";
			iframe.setAttribute("src", 'data:text/plain,');
			document.documentElement.appendChild(iframe);
			window.frames[0].window.alert(name);
			iframe.parentNode.removeChild(iframe);
		};
	}
});