function changedisplay(id, id2) {
	var obj = document.getElementById(id);
	var obj2 = document.getElementById(id2);
	if(obj.style.display == "block") {
		obj.style.display = "none";
	} else {
		obj.style.display = "block";
		obj2.style.display = "none";
	}
}

function display(id) {
	var obj = document.getElementById(id);
	obj.style.display = "block";
}

function hide(id) {
	var obj = document.getElementById(id);
	obj.style.display = "none";
}