// JavaScript Document

// links 
window.onload =  function(){
	function $(id){
		return document.getElementById(id);
	}
	$("home").onmouseover = function(){
			$("home").src = "img/home_bt_in.jpg";
	}
	$("home").onmouseout = function(){
		$("home").src = "img/home_bt.jpg";
	}
	$("freedom").onmouseover = function(){
			$("freedom").src = "img/freedom_bt_in.jpg";
	}
	$("freedom").onmouseout = function(){
		$("freedom").src = "img/freedom_bt.jpg";
	}
	$("produto").onmouseover = function(){
			$("produto").src = "img/produto_bt_in.jpg";
	}
	$("produto").onmouseout = function(){
		$("produto").src = "img/produto_bt.jpg";
	}
	$("contato").onmouseover = function(){
			$("contato").src = "img/contato_bt_in.jpg";
	}
	$("contato").onmouseout = function(){
		$("contato").src = "img/contato_bt.jpg";
	}
	$("links").onmouseover = function(){
			$("links").src = "img/links_bt_in.jpg";
	}
	$("links").onmouseout = function(){
		$("links").src = "img/links_bt.jpg";
	}
	$("twitter").onmouseover = function(){
			$("twitter").src = "img/twitter_bt_in.jpg";
	}
	$("twitter").onmouseout = function(){
		$("twitter").src = "img/twitter_bt.jpg";
	}
	$("orkut").onmouseover = function(){
			$("orkut").src = "img/orkut_bt_in.jpg";
	}
	$("orkut").onmouseout = function(){
		$("orkut").src = "img/orkut_bt.jpg";
	}
	$("flickr").onmouseover = function(){
			$("flickr").src = "img/flickr_bt_in.jpg";
	}
	$("flickr").onmouseout = function(){
		$("flickr").src = "img/flickr_bt.jpg";
	}
	$("twitpic").onmouseover = function(){
			$("twitpic").src = "img/twitpic_bt_in.jpg";
	}
	$("twitpic").onmouseout = function(){
		$("twitpic").src = "img/twitpic_bt.jpg";
	}
	$("twitradio").onmouseover = function(){
			$("twitradio").src = "img/twitradio_bt_in.jpg";
	}
	$("twitradio").onmouseout = function(){
		$("twitradio").src = "img/twitradio_bt.jpg";
	}
	
	//so numeros no tel formulario
	$("ddd").onkeypress = function(){
		$("ddd").value = $("ddd").value.replace(/[^0-9]/g,"");
	}
	$("ddd").onkeyup = function(){
		$("ddd").value = $("ddd").value.replace(/[^0-9]/g,"");
	}
	$("tel").onkeypress = function(){
		$("tel").value = $("tel").value.replace(/[^0-9]/g,"");
	}
	$("tel").onkeyup = function(){
		$("tel").value = $("tel").value.replace(/[^0-9]/g,"");
	}
	
}	

// transparencia img home
function $(id){
	return document.getElementById(id);
}
var t = 0;
function transp(){
	$("img_home").style.opacity = t;
	$("img_home").style.filter = "alpha(opacity=" + (t * 100) + ")";
	t = t + 0.01; //incremento
}
tempo = setInterval("transp()",50);

// validar formulário
	function validar(){
		//valida o campo nome
		var erro = "";
		if ($("nome").value.length < 3){
			erro = "O campo nome deve ser preenchido!";
		}
		// valida o campo email
		var arroba = $("email").value.indexOf("@",1);
		var pt = $("email").value.indexOf(".",arroba + 1);
		var ultpto = $("email").value.lastIndexOf(".");
		if (arroba == -1 || pt == -1 || $("email").value.length - ultpto < 3){
			erro += "<hr />Digite um e-mail válido!";
		}
		// valida o campo ddd
		if ($("ddd").value < 2){
			erro += "<hr />O campo DDD deve ser preenchido!";
		}
		// valida o campo tel
		if ($("tel").value < 7){
			erro += "<hr />O campo telefone deve ser preenchido!";
		} 
		if (erro != "") {
			erro += "<hr /><br /><br />Clique para fechar";
			$("erro").style.display = "block";
			$("erro").innerHTML = erro;
			return false;
		}
	}
	
	function ocultar(){
		$("erro").style.display = "none";
	}
	
	//ampliar imagem
	function ampliar(url,nome_janela,parametros) {
		window.open(url,nome_janela,parametros);
	}

	// selo eco
	function selo(){
		$("selo_eco").style.display = "block";
	}
	function selo_out(){
		$("selo_eco").style.display = "none";
	}