请教一下，为啥调用不到我想要的函数
/////////////////////////////////////////////////////
// Ajax Framework End
/////////////////////////////////////////////////////

Ext.onReady(function() {
Ext.QuickTips.init();
Ext.util.CSS.swapStyleSheet('theme', '../aws_js/extjs/css/xtheme-gray.css');
var tb = new Ext.Toolbar('toolbar');
tb.add({
    id:'editBut',
            cls: 'x-btn-text-icon bmenu', 
            text:'编辑',
            icon:'../aws_img/find_obj.gif',
            tooltip: {text:'将当前客户信息切换至可编辑状态', title:'提示', autoHide:true},
            handler: clickHandler
        },{
            id:'saveBut',
            cls: 'x-btn-text-icon bmenu', 
            text:'保存',
            tooltip: {text:'保存修改的客户信息', title:'提示', autoHide:true},
            icon:'../aws_img/save.gif',
            handler: clickHandler
        }/*,'-'*/,{
            id:'removeBut',
            cls: 'x-btn-text-icon bmenu', 
            text:'删除',
            tooltip: {text:'删除当前客户', title:'提示', autoHide:true},
            handler: clickHandler,
            icon:'../aws_img/delete2.gif'
        },{
            id:'accreditBut',
            cls: 'x-btn-text-icon bmenu', 
            text:'授权',
            tooltip: {text:'授权员工修改的客户信息', title:'提示', autoHide:true},
            icon:'../aws_img/save.gif',
            handler: clickHandler
        },{
            id:'refuseBut',
            cls: 'x-btn-text-icon bmenu', 
            text:'收回权限',
            tooltip: {text:'收回授权权限', title:'提示', autoHide:true},
            icon:'../aws_img/save.gif',
            handler: clickHandler