function showSubNav(id) {
	for(i=1;i<=20;i++){
		if(i==id){
			document.getElementById('li'+i).className="active";
			document.getElementById('div'+i).style.display="block";
		} else{
			if (document.getElementById('li'+i)) {
				document.getElementById('li'+i).className="";
			}
			if (document.getElementById('div'+i)) {
				document.getElementById('div'+i).style.display="none";
			}
		}
	}
	
}