function switchMenu(obj) {
var el = document.getElementById(obj);
if ( el.style.display != "none" ) {
el.style.display = 'none';
}
else {
el.style.display = '';
}
}

function hide(){
document.getElementById("li_content_01").style.display='none';
document.getElementById("li_content_02").style.display='none';
document.getElementById("li_content_03").style.display='none';
document.getElementById("li_content_04").style.display='none';
document.getElementById("li_content_05").style.display='none';
document.getElementById("li_content_06").style.display='none';
document.getElementById("li_content_07").style.display='none';
document.getElementById("li_content_08").style.display='none';
document.getElementById("li_content_09").style.display='none';
document.getElementById("li_content_010").style.display='none';
document.getElementById("li_content_011").style.display='none';
document.getElementById("li_content_012").style.display='none';
document.getElementById("li_content_013").style.display='none';
document.getElementById("li_content_014").style.display='none';

}