function validateForm(formobj){

			var	focusField  = '';
			var alertMsg = 'Los siguientes campos presentan errores:\n';

			var l_Msg = alertMsg.length;

			obj = formobj.elements['nombre'];
			if (obj.value == "" || obj.value == null){
					alertMsg += " - Nombre es requerido\n";
					if (focusField == '')
						focusField = 'nombre';
			}
			obj = formobj.elements['apellido'];
			if (obj.value == "" || obj.value == null){
					alertMsg += " - Apellido es requerido\n";
					if (focusField == '')
						focusField = 'apellido';
			}
			obj = formobj.elements['pais'];
			if (obj.value == "" || obj.value == null){
					alertMsg += " - País es requerido\n";
					if (focusField == '')
						focusField = 'pais';
			}
			obj = formobj.elements['email'];
			if (obj.value == "" || obj.value == null){
					alertMsg += " - Email es requerido\n";
					if (focusField == '')
						focusField = 'email';
			}else if (!validarEmail(obj.value)){
					alertMsg += " - Email es inválido\n";
					if (focusField == '')
						focusField = 'email';
			}
			obj = formobj.elements['confirma_email'];
			if (obj.value == "" || obj.value == null){
					alertMsg += " - Confirma Email es requerido\n";
					if (focusField == '')
						focusField = 'confirma_email';
			}else if (!validarEmail(obj.value)){
					alertMsg += " - Confirma Email es inválido\n";
					if (focusField == '')
						focusField = 'confirma_email';
			}else if (formobj.elements['email'].value != '' && formobj.elements['email'].value != null && obj.value != formobj.elements['email'].value) {
					alertMsg += " - Confirma Email debe ser igual al Email\n";
					if (focusField == '')
						focusField = 'confirma_email';
			}

			obj = formobj.elements['txtCaptcha'];
			if (obj.value == "" || obj.value == null){
					alertMsg += " - Código de Seguridad es requerido\n";
					if (focusField == '')
						focusField = 'txtCaptcha';
			}

			if (alertMsg.length == l_Msg){
				alert('Si utiliza en su programa de correo filtros Anti Spam, revise la carpeta Correo no deseado o Spam con frecuencia. Muchos programas no analizan de forma correcta el contenido de los mensajes y suelen enviar a esas carpetas emails auténticos. Muchas gracias.');
				return true;
			}else{
				alert(alertMsg);
				formobj.elements[focusField].focus();
				return false;
			}

	}

	function validarEmail(valor) {
		if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(valor)){
			return (true)
		} else {
			return (false);
		}
	}