var refer=true;
function combo() {
if (refer) {
  document.all.contents.style.visibility="visible";
  refer=false;
  MM_swapImage('Image27','','images/red_button_03.gif',1)
}
else {
  document.all.contents.style.visibility="hidden";
  refer=true;
  MM_swapImgRestore()
}
}


function combo_two() {
if (refer) {
  document.all.contentstwo.style.visibility="visible";
   MM_swapImage('Image30','','images/red_button_06.gif',1)
  refer=false;
}
else {
  document.all.contentstwo.style.visibility="hidden";
  refer=true;
    MM_swapImgRestore()
}
}

function combo_three() {
if (refer) {
  document.all.contentsthree.style.visibility="visible";
     MM_swapImage('Image31','','images/red_button_07.gif',1)
  refer=false;
}
else {
  document.all.contentsthree.style.visibility="hidden";
  refer=true;
    MM_swapImgRestore()
}
}

function combo_four() {
if (refer) {
  document.all.contentsfour.style.visibility="visible";
     MM_swapImage('Image32','','images/red_button_07.gif',1)
  refer=false;
}
else {
  document.all.contentsfour.style.visibility="hidden";
  refer=true;
    MM_swapImgRestore()
}
}


//  End -->