function sL(object) {
	obj = document.getElementById(object);
	if (object != "") {
		obj.style.display = "block";
	}
}

function hL(object) {
	obj = document.getElementById(object);
	if (object != "") {
		obj.style.display = "none";
	}
}

function conta(object) {
	for (i = 1; i <= 3; i++) {
		obj = "img_" + i;
		obj = document.getElementById(obj);
		obj.style.display = "none";
		obj2 = "exp_" + i;
		obj2 = document.getElementById(obj2);
		obj2.style.display = "none";
	}
		obj3 = "img_" + object;
		sL(obj3);
		obj4 = "exp_" + object;
		sL(obj4);
}