var selectObj;

function changeColor(obj) {
  obj.style.backgroundColor = '#efefef';
  if (selectObj != null) {
    selectObj.style.backgroundColor = '#ffffff';
  }
  selectObj = obj;
}

function returnColor(obj) {
  obj.style.backgroundColor = '#ffffff';
  selectObj = null;
}

function go(url) {
  var win;
  win = window.open(url, '_self');
}
// –¢Žg—p --------------------------------------------------
function changeBgColor(name) {
  var obj;
  if (document.getElementById(name)) {  //e5,e6,n6,m1,o6—p
    obj = document.getElementById(name);
  } else if (document.all(name)) {      //e4—p
    obj = document.all(name);
  }
  obj.style.backgroundColor = '#ffb340';
}