//app点击返回按钮调用该函数
function vipback(){
	var s = mUrl.getApporWX();
	console.log("调用返回函数   "+s);
	if(s=='android'){
		JSInterface.Vback();
	}else if(s=='ios'){
		window.webkit.messageHandlers.Vback.postMessage(null);
	}else if(s=='wx'){
		var src = document.referrer;
		if(src&&src.length>5){
			window.history.go(-1);
		}else{
			if(typeof(WeixinJSBridge)!="undefined"){
	        	WeixinJSBridge.call('closeWindow');
	        }else{
	            if (navigator.userAgent.indexOf("MSIE") > 0) {  
	                if (navigator.userAgent.indexOf("MSIE 6.0") > 0) {
	                    window.opener = null; window.close();  
	                }  
	                else {  
	                    window.open('', '_top'); window.top.close();  
	                }  
	            }  
	            else if (navigator.userAgent.indexOf("Firefox") > 0) {  
	                window.location.href = 'about:blank ';  
	            }  
	            else {  
	                window.opener = null;   
	                window.open('', '_self', '');  
	                window.close();  
	            }
	        }
		}
	}
}