CRM 2011 Disable All Field In Section

*Example Script
Purpose : To disable all field in the section.

function DisableSectionAttributes(SectionName) {
    function setFldDisabled(ctrl) {
        ctrl.setDisabled(true);
    }
    function setFldEnabled(ctrl) {
        ctrl.setDisabled(false);
    }
    var ctrlName = Xrm.Page.ui.controls.get();
    for (var i in ctrlName) {
        var ctrl = ctrlName[i];
        var ctrlSection = ctrl.getParent().getName();
        if (ctrlSection == SectionName) {
            setFldDisabled(ctrl);
        }
    }
}

Using section name to disable the field.