function open_menu01() {
  menu01.style.visibility="visible";
  menu01_text.style.visibility="visible";
  menu02.style.visibility="hidden";
  menu02_text.style.visibility="hidden";
  menu03.style.visibility="hidden";
  menu03_text.style.visibility="hidden";
  menu04.style.visibility="hidden";
  menu04_text.style.visibility="hidden";
  menu05.style.visibility="hidden";
  menu05_text.style.visibility="hidden";
  menu06.style.visibility="hidden";
  menu06_text.style.visibility="hidden";
  menu07.style.visibility="hidden";
  menu07_text.style.visibility="hidden";
  menu08.style.visibility="hidden";
  menu08_text.style.visibility="hidden";
}

function open_menu02() {
  menu01.style.visibility="hidden";
  menu01_text.style.visibility="hidden";
  menu02.style.visibility="visible";
  menu02_text.style.visibility="visible";
  menu03.style.visibility="hidden";
  menu03_text.style.visibility="hidden";
  menu04.style.visibility="hidden";
  menu04_text.style.visibility="hidden";
  menu05.style.visibility="hidden";
  menu05_text.style.visibility="hidden";
  menu06.style.visibility="hidden";
  menu06_text.style.visibility="hidden";
  menu07.style.visibility="hidden";
  menu07_text.style.visibility="hidden";
  menu08.style.visibility="hidden";
  menu08_text.style.visibility="hidden";
}

function open_menu03() {
  menu01.style.visibility="hidden";
  menu01_text.style.visibility="hidden";
  menu02.style.visibility="hidden";
  menu02_text.style.visibility="hidden";
  menu03.style.visibility="visible";
  menu03_text.style.visibility="visible";
  menu04.style.visibility="hidden";
  menu04_text.style.visibility="hidden";
  menu05.style.visibility="hidden";
  menu05_text.style.visibility="hidden";
  menu06.style.visibility="hidden";
  menu06_text.style.visibility="hidden";
  menu07.style.visibility="hidden";
  menu07_text.style.visibility="hidden";
  menu08.style.visibility="hidden";
  menu08_text.style.visibility="hidden";
}

function open_menu04() {
  menu01.style.visibility="hidden";
  menu01_text.style.visibility="hidden";
  menu02.style.visibility="hidden";
  menu02_text.style.visibility="hidden";
  menu03.style.visibility="hidden";
  menu03_text.style.visibility="hidden";
  menu04.style.visibility="visible";
  menu04_text.style.visibility="visible";
  menu05.style.visibility="hidden";
  menu05_text.style.visibility="hidden";
  menu06.style.visibility="hidden";
  menu06_text.style.visibility="hidden";
  menu07.style.visibility="hidden";
  menu07_text.style.visibility="hidden";
  menu08.style.visibility="hidden";
  menu08_text.style.visibility="hidden";
}

function open_menu05() {
  menu01.style.visibility="hidden";
  menu01_text.style.visibility="hidden";
  menu02.style.visibility="hidden";
  menu02_text.style.visibility="hidden";
  menu03.style.visibility="hidden";
  menu03_text.style.visibility="hidden";
  menu04.style.visibility="hidden";
  menu04_text.style.visibility="hidden";
  menu05.style.visibility="visible";
  menu05_text.style.visibility="visible";
  menu06.style.visibility="hidden";
  menu06_text.style.visibility="hidden";
  menu07.style.visibility="hidden";
  menu07_text.style.visibility="hidden";
  menu08.style.visibility="hidden";
  menu08_text.style.visibility="hidden";
}

function open_menu06() {
  menu01.style.visibility="hidden";
  menu01_text.style.visibility="hidden";
  menu02.style.visibility="hidden";
  menu02_text.style.visibility="hidden";
  menu03.style.visibility="hidden";
  menu03_text.style.visibility="hidden";
  menu04.style.visibility="hidden";
  menu04_text.style.visibility="hidden";
  menu05.style.visibility="hidden";
  menu05_text.style.visibility="hidden";
  menu06.style.visibility="visible";
  menu06_text.style.visibility="visible";
  menu07.style.visibility="hidden";
  menu07_text.style.visibility="hidden";
  menu08.style.visibility="hidden";
  menu08_text.style.visibility="hidden";
}

function open_menu07() {
  menu01.style.visibility="hidden";
  menu01_text.style.visibility="hidden";
  menu02.style.visibility="hidden";
  menu02_text.style.visibility="hidden";
  menu03.style.visibility="hidden";
  menu03_text.style.visibility="hidden";
  menu04.style.visibility="hidden";
  menu04_text.style.visibility="hidden";
  menu05.style.visibility="hidden";
  menu05_text.style.visibility="hidden";
  menu06.style.visibility="hidden";
  menu06_text.style.visibility="hidden";
  menu07.style.visibility="visible";
  menu07_text.style.visibility="visible";
  menu08.style.visibility="hidden";
  menu08_text.style.visibility="hidden";
}

function open_menu08() {
  menu01.style.visibility="hidden";
  menu01_text.style.visibility="hidden";
  menu02.style.visibility="hidden";
  menu02_text.style.visibility="hidden";
  menu03.style.visibility="hidden";
  menu03_text.style.visibility="hidden";
  menu04.style.visibility="hidden";
  menu04_text.style.visibility="hidden";
  menu05.style.visibility="hidden";
  menu05_text.style.visibility="hidden";
  menu06.style.visibility="hidden";
  menu06_text.style.visibility="hidden";
  menu07.style.visibility="hidden";
  menu07_text.style.visibility="hidden";
  menu08.style.visibility="visible";
  menu08_text.style.visibility="visible";
}

function close_menu() {
  menu01.style.visibility="hidden";
  menu01_text.style.visibility="hidden";
  menu02.style.visibility="hidden";
  menu02_text.style.visibility="hidden";
  menu03.style.visibility="hidden";
  menu03_text.style.visibility="hidden";
  menu04.style.visibility="hidden";
  menu04_text.style.visibility="hidden";
  menu05.style.visibility="hidden";
  menu05_text.style.visibility="hidden";
  menu06.style.visibility="hidden";
  menu06_text.style.visibility="hidden";
  menu07.style.visibility="hidden";
  menu07_text.style.visibility="hidden";
  menu08.style.visibility="hidden";
  menu08_text.style.visibility="hidden";
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}