function expand(s)
{
  var td = s;
  var d = td.getElementsByTagName("div").item(0);

  td.className = "menuHover";
  d.className = "menuHover";
}

function collapse(s)
{
  var td = s;
  var d = td.getElementsByTagName("div").item(0);

  td.className = "menuNormal";
  d.className = "menuNormal";
}

function mouseout() 

{ 

 window.event.srcElement.style.color = 'white';//鼠标移开时置为白色 

} 

function mouseover() 

{ 

window.event.srcElement.style.color = 'red';//鼠标进入时置为红色//鼠标进入时置为红色 

}