function hideMenu4(){
document.getElementById('sub1').style.display="none";
document.getElementById('sub2').style.display="none";
document.getElementById('sub3').style.display="none";
}
function hideMenu3(){
document.getElementById('sub1').style.display="none";
document.getElementById('sub2').style.display="none";
document.getElementById('sub4').style.display="none";
}
function hideMenu2(){
document.getElementById('sub1').style.display="none";
document.getElementById('sub3').style.display="none";
document.getElementById('sub4').style.display="none";
}
function hideMenu1(){
document.getElementById('sub4').style.display="none";
document.getElementById('sub2').style.display="none";
document.getElementById('sub3').style.display="none";
}

		
function close(menuId){
document.getElementById(menuId).style.display="none";
}