// JavaScript Document
function addNumbers(a,b)
{
	var c = a+b;
	return c;
}
function AcertarDatas() {
	
	var semana = window.document.formulario.semana.value;
	var datas = semana.split("|");

		var novasaida = datas[1].split("-");
		var nExtra = window.document.formulario.nsemextra.value;
		var diavelho = novasaida[0];
		var diasExtra = "7" * nExtra;
		var diavelho = eval(diavelho);
		var diasExtra = eval(diasExtra);
		var novodia = diavelho + diasExtra;
		
		var novomes = novasaida[1];
		var novomes = eval(novomes);
		var somaum = "1";
		var somaum = eval(somaum);
		
		var novoano = novasaida[2];
		var novoano = eval(novoano);
		
			if ((novomes=="1") || (novomes=="3") || (novomes=="5") || (novomes=="7") || (novomes=="8") || (novomes=="10") || (novomes=="12")) {
				if (novodia>31) {
			var novodia = novodia-"31";
			var novomes = novomes + somaum;
				}
			} 
			if ((novomes=="4") || (novomes=="6") || (novomes=="9") || (novomes=="11")) {
				if (novodia>30) {
			var novodia = novodia-"30";
			var novomes = novomes + somaum;
				}
			} 
			if (novomes=="2") {
				if (novodia>28) {
			var novodia = novodia-"28";
			var novomes = novomes + somaum;
				}
			}

		if (novomes>"12") {
			var novomes = novomes-"12";
			var novoano = novoano + somaum;
		}

		var datanova = novodia + "-" + novomes + "-" + novoano;

	window.document.formulario.entrada.value = datas[0];
	window.document.formulario.saida.value = datanova;
}