// JavaScript Document
	
	function checkInput(){
		if ((event.keyCode > 32 && event.keyCode < 48) || (event.keyCode > 57 && event.keyCode < 65) ||(event.keyCode > 90 && event.keyCode < 97))
			event.returnValue = false;
	}
	
	function controlPanels(nivel){
		//se existir o objeto...
		if (document.getElementById("table_"+nivel)){
			var oTable = document.getElementById("table_"+nivel);
			oTable.style.display =  (oTable.style.display == "block") ? "block" : "block" ;
		}
	}