var help=true;
function addEvent(obj, evType, fn){
	if (obj.addEventListener){
	    obj.addEventListener(evType, fn, true);
	    return true;
	} else if (obj.attachEvent){
	    var r = obj.attachEvent("on"+evType, fn);
	    return r;
	} else {
	    return false;
	}
}

function checkBrowser(){
	var browser = navigator.appName;
	if(browser == "Netscape"){
		document.getElementById("body").className = "bodyFirefox";
	}
}

function addAlertOnInit(msg, redirect){
	addEvent(window, 'load', function(){
		alert(msg);
		if(redirect){
			window.location.href = redirect;
		}
	});
}

function get(id, tagName){
	var elem = document.getElementById(id);
	if(elem)
		return elem;

	if(tagName)
		return getIt(tagName, id);
	return false;
}

function showHelp(){
	if(help){
		document.getElementById("textHelp").style.display="none";
		document.getElementById("barHelp").style.backgroundImage="url('http://nweb4.vetorweb.com.br/default/img/mais.png')"
		help=false;
	}
	else{
		document.getElementById("textHelp").style.display="block";
		document.getElementById("barHelp").style.backgroundImage="url('http://nweb4.vetorweb.com.br/default/img/menos.png')"
		help=true;
	}
}

emailRE = new RegExp("^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$");
function validaEmail(email) {
  if (emailRE.test(email)) {
    return true;
  }
  alert("Email inválido");
  return false;
}