function mudaURL(){
				caminho = document.fomulario;
				f = document.formulario;
				wc = f.WHICHCHANNEL.options[f.WHICHCHANNEL.selectedIndex].value;
				di = document.formulario.DI.value;
				df = document.formulario.DF.value;
				df = df.replace("+","%2B");
				df = df.replace("-","%2D");
				url = base + "&WHICHCHANNEL=" + wc + "&DI=" + di + "&DF=" + df + "&WHICHCODE=200";
				document.location.href = url;
			}