function verifica(nform) {
	if (nform.email.value == "") {alert("Informe seu e-mail.");nform.email.focus();nform.email.select();return false;}
	else {
		prim = nform.email.value.indexOf("@")
		if(prim < 2) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf("@",prim + 1) != -1) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf(".") < 1) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf(" ") != -1) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf("zipmeil.com") > 0) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf("hotmeil.com") > 0) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf(".@") > 0) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf("@.") > 0) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf(".com.br.") > 0) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf("/") > 0) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf("[") > 0) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf("]") > 0) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf("(") > 0) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf(")") > 0) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
		if(nform.email.value.indexOf("..") > 0) {alert("Verifique seu e-mail.");nform.email.focus();nform.email.select();return false;}
	}
	return true;
}