Microsoft Dynamics CRM 4 JS 隐藏窗体按钮

var mnuBar1 = window.document.getElementById("mnuBar1");
var mnuBar1_UL = mnuBar1.getElementsByTagName("ul");
var mnuBar1_LIs = mnuBar1.getElementsByTagName("li");
if (mnuBar1_LIs != null && mnuBar1_LIs.length > 0) {
for (var i = 0; i < mnuBar1_LIs.length; i++) {
if (mnuBar1_LIs[i].id != "_MBcrmGridPrint" && mnuBar1_LIs[i].id != "_MBcrmGridPrint" && mnuBar1_LIs[i].id != "_MBcrmGridExportToExcel") {
mnuBar1_LIs[i].style.display = "none";
}
}
}