/*
 * Requisição
 */
function devolveRq(){
	try{
		rq = new XMLHttpRequest();
	}
	catch(erro1){
		try{
			rq = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(erro2){
			try{
				rq = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(erro3){
				window.alert('Seu navegador não tem suporte a Ajax');
				rq = false;
			}
		}
	}
	return rq;
}
var ajax = devolveRq();

/*
 * Newsletter
 */
function newsletter(){
	var rand = parseInt(Math.random()*999999999999);
	var mail = document.getElementById("email_news").value;
	var url = "_inc/newsletter.php?r="+rand+"&acao=1&email_news="+mail;
	ajax.open("GET", url, true);
	ajax.onreadystatechange = RespostaNews;
	ajax.send(null);
}

function RespostaNews(){
	if(ajax.readyState == 4){
		if(ajax.status == 200){
			var Resp = ajax.responseText;
			document.getElementById("news").innerHTML = Resp;
		}else{
			window.alert('ERRO: '+ ajax.statusText);
		}
	}else{
		document.getElementById("news").innerHTML = "<div style='padding:2px;font-size:10px;font-weight:bold;text-align:center;background-color:#FFF;'><img src='images/loading.gif' alt='' border='0' width='20' height='20' /><br />Carregando...</div>";
	}
}

/*
 * TROCA FUNDO
 */
 
var id = 0;
var imgs = new Array();
imgs[0] = "images/jpg/bg-html2.jpg";
imgs[1] = "images/jpg/bg-html3.jpg";
imgs[2] = "images/jpg/bg-html4.jpg";
imgs[3] = "images/jpg/bg-html5.jpg";
imgs[4] = "images/jpg/bg-html.jpg";

function troca(){
        if (id<imgs.length-1){
            id++;              
        } else{
            id=0
          }
        $("#box").fadeOut(500);
        setTimeout("$('#box').html('<img src=\""+imgs[id]+"\"/>');$('#box').fadeIn(500);",500);
}