function main(page, pageContext) {
    //在公共参数列表的最后一个单元格后面新增加单元格：lastCell
    var paramTable = page.paramPanel.layoutTable;
    var i, cell, lastCell;
    for (i = 0; i < paramTable.rows.length; i++) {
        cell = paramTable.rows[i].insertCell( - 1);
        if (i == paramTable.rows.length - 1) lastCell = cell;
    }
    //新建button，并把这个button加到最后一个参数后面
    var btnElem = document.createElement("input");
    btnElem.type = "button";
    btnElem.title = "运行计划";
    btnElem.value = "调度";
    btnElem.width = "100px";
    btnElem.onclick = doClick;
    if (lastCell) {
        lastCell.appendChild(btnElem);
    }
    //定义button的Click事件
    function doClick() {
        //执行一个计划 
        //计划ID
        var scheduleId = "I4028818a3654ad170150c5dbf3d31ae7";
        var result = util.remoteInvoke("ScheduleSDK", "run", [scheduleId]);
        if (result.result) alert("运行成功！");
        else alert("运行失败");
    }
}