function validarTexto(idTexto, idContador, maximoCaracteres) 
{
	var texto = document.getElementById(idTexto);
	var contador = document.getElementById(idContador);
	if (texto.value.length > maximoCaracteres) // if too long...trim it!
		texto.value = texto.value.substring(0, maximoCaracteres);	
	else// otherwise, update 'characters left' counter
		contador.value = maximoCaracteres - texto.value.length;
}

function quitarArchivo(id)
{
	archivosASubir.splice(id, 1);
	refrescarListaArchivos();
}

function controlarNumeros(evento)
{
	var keynum
	var keychar
	
	if(window.event) // IE
	{
		keynum = evento.keyCode
	}
	else if(evento.which) // Netscape/Firefox/Opera
	{
		keynum = evento.which
	}
	//alert(keynum)
	//PRUEBA DE CARACTERES DE TECLADO
	if(keynum > 46 && keynum < 58) //SI ES NUMERO
	{
		keychar = String.fromCharCode(keynum)
		return keychar
	}
	else
	{
		if(keynum == 8 || keynum == 9)
			return true;
		else
			return false;
	}
}

function controlarNumeros(evento)
{
	var keynum
	var keychar
	
	if(window.event) // IE
	{
		keynum = evento.keyCode
	}
	else if(evento.which) // Netscape/Firefox/Opera
	{
		keynum = evento.which
	}
	//alert(keynum)
	//PRUEBA DE CARACTERES DE TECLADO
	if(keynum > 46 && keynum < 58) //SI ES NUMERO
	{
		keychar = String.fromCharCode(keynum)
		return keychar
	}
	else
	{
		if(keynum == 8 || keynum == 9)
			return true;
		else
			return false;
	}
}

// email

function controlarEmail (elementoInput) {
	var keynum = elementoInput.value;
	
	var error="Correo electrónico no válido";
	
	if (keynum == "") 
	{
	   alert(error);
	}
    var emailFilter=/^.+@.+\..{2,3}$/;
    if (!(emailFilter.test(keynum)))
	{ 
		elementoInput.value = "";
		alert(error);
    }
    else 
	{
		//test email for illegal characters
		var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
		if (keynum.match(illegalChars)) 
		{
			elementoInput.value = "";
			alert(error);
		}
    }
}


// phone number - strip out delimiters and check for 10 digits

function checkPhone (strng) {
var error = "";
if (strng == "") {
   error = "You didn't enter a phone number.\n";
}

var stripped = strng.replace(/[\(\)\.\-\ ]/g, ''); //strip out acceptable non-numeric characters
    if (isNaN(parseInt(stripped))) {
       error = "The phone number contains illegal characters.";
  
    }
    if (!(stripped.length == 10)) {
	error = "The phone number is the wrong length. Make sure you included an area code.\n";
    } 
return error;
}


// password - between 6-8 chars, uppercase, lowercase, and numeral

function checkPassword (strng) {
var error = "";
if (strng == "") {
   error = "You didn't enter a password.\n";
}

    var illegalChars = /[\W_]/; // allow only letters and numbers
    
    if ((strng.length < 6) || (strng.length > 8)) {
       error = "The password is the wrong length.\n";
    }
    else if (illegalChars.test(strng)) {
      error = "The password contains illegal characters.\n";
    } 
    else if (!((strng.search(/(a-z)+/)) && (strng.search(/(A-Z)+/)) && (strng.search(/(0-9)+/)))) {
       error = "The password must contain at least one uppercase letter, one lowercase letter, and one numeral.\n";
    }  
return error;    
}    


// username - 4-10 chars, uc, lc, and underscore only.

function checkUsername (strng) {
var error = "";
if (strng == "") {
   error = "You didn't enter a username.\n";
}


    var illegalChars = /\W/; // allow letters, numbers, and underscores
    if ((strng.length < 4) || (strng.length > 10)) {
       error = "The username is the wrong length.\n";
    }
    else if (illegalChars.test(strng)) {
    error = "The username contains illegal characters.\n";
    } 
return error;
}       


// non-empty textbox

function isEmpty(strng) {
var error = "";
  if (strng.length == 0) {
     error = "The mandatory text area has not been filled in.\n"
  }
return error;	  
}

// was textbox altered

function isDifferent(strng) {
var error = ""; 
  if (strng != "Can\'t touch this!") {
     error = "You altered the inviolate text area.\n";
  }
return error;
}

// exactly one radio button is chosen

function checkRadio(checkvalue) {
var error = "";
   if (!(checkvalue)) {
       error = "Please check a radio button.\n";
    }
return error;
}

// valid selector from dropdown list

function checkDropdown(choice) {
var error = "";
    if (choice == 0) {
    error = "You didn't choose an option from the drop-down list.\n";
    }    
return error;
}    

function limpiarBusquedaAvanzada()
{
	//document.busqueda_simple.data[BusquedaEspecifica][superficie_terreno].value=="";
	document.getElementById("text_superficie_terreno").value = "";
	document.getElementById("text_cantidad_dormitorios").value = "";
	document.getElementById("text_cantidad_banos").value = "";
	document.getElementById("check_existe_jardin").checked = "";
	document.getElementById("check_existe_garaje").checked = "";
}


//*************************TOOLTIP**************************