function efectBtn(btn) {
		btn.style.backgroundPosition = "bottom";
	}
	function defaultBtn(btn) {
		btn.style.backgroundPosition = "top";
	}
	
	function focusInput(classe, obj) {
		
		
		document.getElementById(obj.id).className = classe+"_focus";
	
	}
	
	function blurInput(classe, obj) {
		
		
		document.getElementById(obj.id).className = classe+"_blur";
	
	}
	
	function validaForm(frm) {
		var frm = document.getElementById(frm);
		var element = frm.elements;
		try {
			for(var i = 0; i < element.length; i++) {
				if(element[i].getAttribute("valida") && element[i].value == "") {
					alert("O campo " + element[i].getAttribute("valida") + " é obrigatorio.");
					element[i].focus();
					return false;
				}
			}
		}catch(ex) {alert(ex);}

		login = document.getElementById('email').value;

		if(!(/^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/.test(login))) {
			alert("E-mail inválido!");
			document.getElementById('email').focus();
			return false;
		}

		frm.onSbmit;

}