image1 = new Image();
image1.src = "../img/menu/home_on.jpg";
image2 = new Image();
image2.src = "../img/menu/quemsomos_on.jpg";
image3 = new Image();
image3.src = "../img/menu/marcas_on.jpg";
image4 = new Image();
image4.src = "../img/menu/clientes_on.jpg";
image5 = new Image();
image5.src = "../img/menu/contato_on.jpg";
image6 = new Image();
image6.src = "../img/menu/clientesint_on.jpg";
image7 = new Image();
image7.src = "../img/menu/contatoint_on.jpg";

function validaContato(frm){
	if (frm.nome.value.length < 1){
		alert("Preencha o campo 'Nome'.");
		frm.nome.focus();
		return (false);
	}
	if (frm.email.value.length < 1){
		alert("Preencha o campo 'E-mail'.");
		frm.email.focus();
		return (false);
	}
	if (frm.msg.value.length < 1){
		alert("Preencha o campo 'Mensagem'.");
		frm.msg.focus();
		return (false);
	}
	return (true);
}

function validaNews(frm){
	if ((frm.nome.value.length < 1) || (frm.nome.value == 'Nome')){
		alert("Preencha o campo 'Nome'.");
		frm.nome.focus();
	}
	else {
		if ((frm.email.value.length < 1) || (frm.email.value == 'E-mail')){
			alert("Preencha o campo 'E-mail'.");
			frm.email.focus();
		}
		else {
			frm.submit();
		}
	}
}

function apagaCampo(obj){
	if ((obj.value == 'Nome') || (obj.value == 'E-mail')){
		obj.value = '';
	}
}

function produtos(obj){
	valor = obj.options[obj.selectedIndex].value
	if (valor > 0){
		document.location = '../produtos/index.php?cate1_cod='+valor;
	}
}

function change_menu(item,state){
	document.getElementById(item).src = '../img/menu/' + item + '_' + state + '.jpg';
}