tab-webview-main.html 里的JavaScript 怎么修改才可以实现调用其它子页面？

<script type="text/javascript">  
             //mui初始化  
            mui.init();  
            var subpages = ['tab-webview-subpage-about.html','tab-webview-subpage-chat.html','tab-webview-subpage-contact.html','tab-webview-subpage-setting.html'];  
            var subpage_style = {  
                top: '45px',  
                bottom: '51px'  
            };  

            var aniShow = {};  

             //创建子页面，首个选项卡页面显示，其它均隐藏；  
            mui.plusReady(function() {  
                var self = plus.webview.currentWebview();  
                for (var i = 0; i < 4; i++) {  
                    var temp = {};  
                    var sub = plus.webview.create(subpages[i], subpages[i], subpage_style);  
                    if (i > 0) {  
                        sub.hide();  
                    }else{  
                        temp[subpages[i]] = "true";  
                        mui.extend(aniShow,temp);  
                    }  
                    self.append(sub);  
                }  
            });  
             //当前激活选项  
            var activeTab = subpages[0];  
            var title = document.getElementById("title");  
             //选项卡点击事件  
            mui('.mui-bar-tab').on('tap', 'a', function(e) {  
                var targetTab = this.getAttribute('href');  
                if (targetTab == activeTab) {  
                    return;  
                }  
                //更换标题  
                title.innerHTML = this.querySelector('.mui-tab-label').innerHTML;  
                //显示目标选项卡  
                //若为iOS平台或非首次显示，则直接显示  
                if(mui.os.ios||aniShow[targetTab]){  
                    plus.webview.show(targetTab);  
                }else{  
                    //否则，使用fade-in动画，且保存变量  
                    var temp = {};  
                    temp[targetTab] = "true";  
                    mui.extend(aniShow,temp);  
                    plus.webview.show(targetTab,"fade-in",300);  
                }  
                //隐藏当前;  
                plus.webview.hide(activeTab);  
                //更改当前活跃的选项卡  
                activeTab = targetTab;  
            });  
             //自定义事件，模拟点击“首页选项卡”  
            document.addEventListener('gohome', function() {  
                var defaultTab = document.getElementById("defaultTab");  
                //模拟首页点击  
                mui.trigger(defaultTab, 'tap');  
                //切换选项卡高亮  
                var current = document.querySelector(".mui-bar-tab>.mui-tab-item.mui-active");  
                if (defaultTab !== current) {  
                    current.classList.remove('mui-active');  
                    defaultTab.classList.add('mui-active');  
                }  
            });  
        </script>