function menu_two_mouseover(yo){
  yo.style.background = '#d0e0f2';
  /* yo.style.color = '#333'; */
}

function menu_two_mouseout(yo){
  yo.style.background = '#f7f7f8';
  /* yo.style.color = '#cceeef';   */
  
}

function menu_three_mouseover(yo){
  //yo.style.text-decoration = 'underline';
  /* yo.style.color = '#333'; */
}

function menu_three_mouseout(yo){
  //yo.style.text-decoration = 'none';
  /* yo.style.color = '#cceeef';   */

}

function mouseOver(yo){
  document.b1.src ="arrow_up.gif";
}

function mouseOut(yo){
  document.b1.src ="arrow_over.gif";
}