/*
function mostrar_informacion(txt){
	//expresion regular
	var b=/^[^@\s]+@[^@\.\s]+(\.[^@\.\s]+)+$/
	//comentar la siguiente linea si no se desea que aparezca el alert()
	//alert("Email " + (b.test(txt)?"":"no ") + "válido.")
	//devuelve verdadero si validacion OK, y falso en caso contrario
	return b.test(txt)
}
*/
function formCheck(formobj){
	var fieldRequired = Array(	"nombre",
								"e_mail",
								"usuario",
								"password_1",
								"password_2");
	var fieldDescription = Array("Falta nombre",
								"Falta e-mail",
								"Falta usuario",
								"Falta contraseña",
								"Falta confirmar contraseña");
	
	/*
	var fieldRequired = Array(	"nombre",
								"apellidos", 
								"direccion",
								"telefono_fijo",
								"telefono_movil",
								"e_mail",
								"usuario",
								"password_1",
								"password_2",
								"mensaje");
	var fieldDescription = Array("Falta nombre",
								"Falta apellidos", 
								"Falta direccion",
								"Falta telefono_fijo",
								"Falta telefono_movil",
								"Falta e_mail",
								"Falta usuario",
								"Falta contraseña",
								"Falta confirmar contraseña",
								"Falta mensaje"	);
	*/
	// dialog message
	var alertMsg = "Por favor complete los siguientes campos:\n";
	
	var l_Msg = alertMsg.length;
	
	for (var i = 0; i < fieldRequired.length; i++){
		var obj = formobj.elements[fieldRequired[i]];
		if (obj){
			switch(obj.type){
			case "select-one":
				if (obj.selectedIndex == -1 || obj.options[obj.selectedIndex].text == ""){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "select-multiple":
				if (obj.selectedIndex == -1){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "password":
			case "text":
			case "textarea":
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "file":
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			default:
			}
			if (obj.type == undefined){
				var blnchecked = false;
				for (var j = 0; j < obj.length; j++){
					if (obj[j].checked){
						blnchecked = true;
					}
				}
				if (!blnchecked){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
			}
		}
	}

	if (alertMsg.length == l_Msg){
		/*
		if( mostrar_informacion( formobj.elements['e_mail'] ) == true ){
			return true;
		}else{
			alert('Formato de correo electrónico incorrecto');	
			return false;
		}*/
		return true;
	}else{
		alert(alertMsg);
		return false;
	}
}

function formCheck2(formobj){
	var fieldRequired = Array("alias", "password");
	var fieldDescription = Array("Falta nombre", "Falta contraseña");
	// dialog message
	var alertMsg = "Por favor complete los siguientes campos:\n";
	
	var l_Msg = alertMsg.length;
	
	for (var i = 0; i < fieldRequired.length; i++){
		var obj = formobj.elements[fieldRequired[i]];
		if (obj){
			switch(obj.type){
			case "select-one":
				if (obj.selectedIndex == -1 || obj.options[obj.selectedIndex].text == ""){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "select-multiple":
				if (obj.selectedIndex == -1){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "text":
			case "password":
			case "textarea":
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "file":
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			default:
			}
			if (obj.type == undefined){
				var blnchecked = false;
				for (var j = 0; j < obj.length; j++){
					if (obj[j].checked){
						blnchecked = true;
					}
				}
				if (!blnchecked){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
			}
		}
	}

	if (alertMsg.length == l_Msg){
		return true;
	}else{
		alert(alertMsg);
		return false;
	}
}