function toggle_visibility(id) {

			if (id != "mounth01"){
			var e = document.getElementById('mounth01');
					$("#mounth01").hide();
			}
			if (id != "mounth02"){
			var e = document.getElementById('mounth02');
					$("#mounth02").hide();
			}
			if (id != "mounth03"){
			var e = document.getElementById('mounth03');
					$("#mounth03").hide();
			}
			if (id != "mounth04"){
			var e = document.getElementById('mounth04');
					$("#mounth04").hide();
			}
			if (id != "mounth05"){
			var e = document.getElementById('mounth05');
					$("#mounth05").hide();
			}
			if (id != "mounth06"){
			var e = document.getElementById('mounth06');
					$("#mounth06").hide();
			}
			if (id != "mounth07"){
			var e = document.getElementById('mounth07');
					$("#mounth07").hide();
			}
			if (id != "mounth08"){
			var e = document.getElementById('mounth08');
					$("#mounth08").hide();
			}
			if (id != "mounth09"){
			var e = document.getElementById('mounth09');
					$("#mounth09").hide();
			}
			if (id != "mounth10"){
			var e = document.getElementById('mounth10');
					$("#mounth10").hide();
			}
			if (id != "mounth11"){
			var e = document.getElementById('mounth11');
					$("#mounth11").hide();
			}
			if (id != "mounth12"){
			var e = document.getElementById('mounth12');
					$("#mounth12").hide();
			}


			var e = document.getElementById(id);
			if (e.style.display != 'block'){
				$("#" + id).slideDown("slow");
			}

}