function showLAYER0(layName){
  if(document.layers) {
    if (document.layers[layName]) document.layers[layName].visibility='show' 
  }
  if(document.all) {
    if(document.all(layName)) document.all(layName).style.visibility='visible'
  }
}
function hideLAYER0(layName){
  if(document.layers) {
    if (document.layers[layName]) document.layers[layName].visibility='hide' 
  }
  if(document.all) {
    if(document.all(layName)) document.all(layName).style.visibility='hidden'
  }
}
function getINNERWIDTH(){
  var pageWIDTH=null
  if(document.layers) pageWIDTH=window.innerWidth         //NN用
  if(document.all)    pageWIDTH=document.body.clientWidth //IE用
    return pageWIDTH
}
function tick0(){
  hideLAYER0('Ono01')
  hideLAYER0('Ono02')
  showLAYER0('Ono00')
}
function tick1(){
  hideLAYER0('Ono02')
  hideLAYER0('Ono00')
  showLAYER0('Ono01')
}
function tick2(){
  hideLAYER0('Ono00')
  hideLAYER0('Ono01')
  showLAYER0('Ono02')
}