function valida(){

	var arrayEl = new Array();

	var erros = 0;

	

	el = $('nome');

	if(el.value == "")

	{

		erros++;

		el.style.border = "1px #B00 dashed";

		el.style.background = "#FEE";

	}

	else

	{

		el.style.border = "1px #7F9DB9 solid";

		el.style.background = "#FFF";

	}

	

	el = $('email');

	if(el.value == "")

	{

		erros++;

		el.style.border = "1px #B00 dashed";

		el.style.background = "#FEE";

	}

	else

	{

		if(!(/[\w0-9]\-{0,1}[\w0-9]?@[\w0-9-].[\w][\w.]?/.test(el.value))){

			erros++;

			el.style.border = "1px #B00 dashed";	

			el.style.background = "#FEE";

		}else{

			el.style.border = "1px #7F9DB9 solid";

			el.style.background = "#FFF";

			if($('poster1').checked){

				$('obrigado').value = 'obrigado.php?cad=1&mail=' + el.value;

			}else{

				$('obrigado').value = 'obrigado.php?cad=1';

			}

		}

	}



	

	if(erros > 0){

		alert("Os campos em 'vermelho' precisam ser preenchidos.");

		return false;

	}

	

	return true;

}