function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);



//tab�؂�ւ��p
function show1(){
	content1.style.display="block";
	content2.style.display="none";
	content3.style.display="none";
}

function show2(){
	content1.style.display="none";
	content2.style.display="block";
	content3.style.display="none";
}

function show3(){
	content1.style.display="none";
	content2.style.display="none";
	content3.style.display="block";
}