function checkMail (parForm, parfieldMail){
	fieldMail = eval("document."+parForm+"."+parfieldMail);
	if(!(/^\w+([\.\-_]?\w+)*@\w+([\.\-_]?\w+)*(\.\w{2,4})+$/.test(fieldMail.value))){
		alert("Favor informar um email válido!");
		fieldMail.focus();
		return false;
	} 
}