function SelecionaNota(nota){
	var estrelas = document.getElementById("spanAvaliacao");
	if(estrelas != null){
		estrelas.style.width = (nota.value * 20).toString() + '%';
	}
}

function Avaliar(nota){
	for (i=1; i<=5; i++){
		document.getElementById("star" + i).src = (i <= nota ? document.getElementById("star" + i).src.replace("off", "ok").replace("on", "ok") : document.getElementById("star" + i).src);
	}
	document.getElementById("txtNotachecked").value = nota;
	ResetPreview();
}

function Preview(nota){
	for (i=1; i<=5; i++){
		document.getElementById("star" + i).src = (i <= nota ? document.getElementById("star" + i).src.replace("off", "on").replace("ok", "on") : document.getElementById("star" + i).src);
	}
}

function ResetPreview(){
	var nota = 0;
	if (document.getElementById("txtNotachecked").value.length > 0){
		nota = Number(document.getElementById("txtNotachecked").value)
		for (i=1; i<=5; i++){
			document.getElementById("star" + i).src = (i <= nota ? document.getElementById("star" + i).src.replace("off", "ok").replace("on", "ok") : document.getElementById("star" + i).src.replace("on", "off").replace("ok", "off"));
		}
	}
	else{
		for (i=1; i<=5; i++){
			document.getElementById("star" + i).src = document.getElementById("star" + i).src.replace("on", "off").replace("ok", "off");
		}
	}
}