function WM_toggle_about(id) {
  if (document.all){
    if(document.all[id].className == 'about'){
      document.all[id].className = 'abouthl';
    } else {
      document.all[id].className = 'about';
    }
  } else if (document.getElementById){
    if(document.getElementById(id).className == 'about'){
      document.getElementById(id).className = 'abouthl';
    } else {
      document.getElementById(id).className = 'about';
    }
  } 
}

function WM_toggle_explore(id) {
  if (document.all){
    if(document.all[id].className == 'explore'){
      document.all[id].className = 'explorehl';
    } else {
      document.all[id].className = 'explore';
    }
  } else if (document.getElementById){
    if(document.getElementById(id).className == 'explore'){
      document.getElementById(id).className = 'explorehl';
    } else {
      document.getElementById(id).className = 'explore';
    }
  } 
}

function WM_toggle_support(id) {
  if (document.all){
    if(document.all[id].className == 'support'){
      document.all[id].className = 'supporthl';
    } else {
      document.all[id].className = 'support';
    }
  } else if (document.getElementById){
    if(document.getElementById(id).className == 'support'){
      document.getElementById(id).className = 'supporthl';
    } else {
      document.getElementById(id).className = 'support';
    }
  } 
}