function checkemail(email){var str=email;var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;if(filter.test(str)){return true}else{alert("Por favor, introduzca un correo electronico válido!!!");return false}}function validateLongTxt(texto,maxlong){var tecla,in_value,out_value;if(texto.value.length>maxlong){in_value=texto.value;out_value=in_value.substring(0,maxlong);texto.value=out_value;return false}return true}