function showlinks(div) {
	var obj = document.getElementById(div);
	if (obj.style.display == "block") {
		obj.style.display = "none";
	} else {
		obj.style.display = "block";
	}
}

function timer() {
	setTimeout("swap();timer();",10000);
}

function swap() {
	var images = [
		"top_image1.jpg",
		"top_image2.jpg",
		"top_image3.jpg",
		"top_image4.jpg",
		"top_image5.jpg",
		"top_image6.jpg",
		"top_image7.jpg",
		"top_image8.jpg",
		"top_image9.jpg"
	]; 
	var imagem = images[Math.floor(Math.random()*images.length)];
	document.top_image.src="img/"+imagem;
}

function treinamento(div) {
	
	var obj = document.getElementById(div);
	
	if (obj.style.display == "block") {
		obj.style.display = "none";
	} else {
		document.getElementById('qualidade').style.display = "none";
		document.getElementById('foodsafety').style.display = "none";
		document.getElementById('meioambiente').style.display = "none";
		document.getElementById('outros').style.display = "none";
		obj.style.display = "block";
	}

}

function destaque(obj) {
	new Effect.Pulsate(obj, { duration: 1.0, transition: Effect.Transitions.linear});
}

function isNumberKey(evt) {
	
	var charCode = (evt.which) ? evt.which : event.keyCode

	if (charCode > 31 && (charCode < 48 || charCode > 57)) {
		return false;
	}

	return true;
}

function isFoneKey(evt) {
	
	var charCode = (evt.which) ? evt.which : event.keyCode

	if (charCode > 31 && (charCode < 48 || charCode > 57) && charCode != 45) {
		return false;
	}

	return true;
}