透视分析如何实现参数后面添加分析及导出按钮？

function main(insight) {
    if (typeof(insight.old_rebuildParamPanel) == "undefined") {
        insight.old_rebuildParamPanel = insight.rebuildParamPanel;
        insight.rebuildParamPanel = function() {
            this.old_rebuildParamPanel();
            addBtns(this);
        };
    }
}
//添加按钮
function addBtns(insight) {
    var paramTable = insight.paramPanelObj.layoutTable;
    var i, cell, lastCell1, lastCell2;
    for (i = 0; i < paramTable.rows.length; i++) {
        cell = paramTable.rows[i].insertCell(-1);
        if (i == 0) lastCell1 = cell; //paramTable.rows.length - 1
        if (i == 1) lastCell2 = cell;
    }
    //添加分析按钮
    if (lastCell1) {
        var btnElem = document.createElement("button");
        btnElem.innerText = "分析";
        btnElem.className = "queryview-toolbar-button";
        btnElem.style.border = "1px solid #A1ACB9";
        btnElem.style.width = "60px";
        btnElem.style.height = "23px";
        btnElem.style.padding = "2px 0 0 0";
        btnElem.style.margin = "0 10px 0 10px";
        insight.addListener(btnElem, 'click',
            function() {
                insight.doRefresh();
            }, this);
        lastCell1.appendChild(btnElem);
    }
    //添加导出按钮
    if (lastCell2) {
        var btnExport = document.createElement("button");
        btnExport.innerText = "导出";
        btnExport.className = "queryview-toolbar-button";
        btnExport.style.border = "1px solid #A1ACB9";
        btnExport.style.width = "60px";
        btnExport.style.height = "23px";
        btnExport.style.padding = "2px 0 0 0";
        btnExport.style.margin = "0 10px 0 10px";
        insight.addListener(btnExport, "click",
            function() {
                insight.doExportMenuCloseUp("EXCEL2007");
            }, this);
        lastCell2.appendChild(btnExport);
    }
}