function expandmenu(divid, imgid)
{
      div = this.document.getElementById(divid);
      img = this.document.getElementById(imgid);

      div.style.left = eval(img.offsetLeft - 100) + 'px';
      div.style.top = eval(img.offsetTop + 20) + 'px';
      
      if (!div.style.visibility || div.style.visibility == 'hidden') {
            div.style.visibility = 'visible';
            div.style.display = 'block';
            img.src = "/images/main/icons/control_upactive_blue.png";
      } else {
            div.style.visibility = 'hidden';
            div.style.display = 'none';
            img.src = "/images/main/icons/control_down_blue.png";
      }
}

var currentmenu = 'menugroup1';
function switchmenu(divid) 
{
      if (divid != currentmenu) {
            div = this.document.getElementById(divid);
            div.style.visibility = 'visible';
            div.style.display = 'block';            
      }


}