function showMe (it, box) {
	  var vis = (box.checked) ? "block" : "none";
	  document.getElementById(it).style.display = vis;
	}


	function toggle_visibility(id) {
	   var e = document.getElementById(id);
	   if(e.style.display == 'block')
		  e.style.display = 'none';
	   else
		  e.style.display = 'block';
	}

	
	function marcarCheck() {
		var contaForm = document.Form.elements.length;
		var campo = document.Form;
		var i;

		for (i=0; i<contaForm; i++) {
			if (campo.elements[i].id == "Marcados") {
				campo.elements[i].checked = campo.CheckTodos.checked;
			}
		}

	}