var _clickEngine = function(e){        var event = e || window.event;        var target = event.srcElement || event.target;        if (target && target.tagName == 'A' && target.target == '_blank'){            if(target.href.indexOf('xx.xx.com') != -1){                //相关处理                if (event.target) {                    event.stopPropagation();                    event.preventDefault();                } else {                    event.cancelBubble = true;                    event.returnValue = false;                }            }        }    };