top.Navwin = self;
// ROLL OVER SITIO CLIENTE
function roll(name,over)
{
	if(top.Navwin.document.images) 
	{
		if (over)
			top.Navwin.document.images[name].src = "imag/" + name + "_on.gif";
		else
			top.Navwin.document.images[name].src = "imag/" + name + ".gif";
	}
}

// ROLL OVER ADMINISTRADOR
function roll_admin(name,over)
{
	if(top.Navwin.document.images) 
	{
		if (over)
			top.Navwin.document.images[name].src = "../imag/" + name + "_on.gif";
		else
			top.Navwin.document.images[name].src = "../imag/" + name + ".gif";
	}
}

// ROLL OVER Pop UP
function roll_pop(name,over)
{
	if(top.Navwin.document.images) 
	{
		if (over)
			top.Navwin.document.images[name].src = name + "_on.gif";
		else
			top.Navwin.document.images[name].src =  name + ".gif";
	}
}

// FORMULARIOS ADMINISTRADOR
function isEmpty (inputStr)
{
  if (inputStr == null || inputStr == "") return true;
  return false;
}
function isNotLink (inputStr)
{
  if (isEmpty(inputStr) || inputStr.indexOf("http://")==-1 || inputStr.indexOf(".")==-1 || inputStr.length<10) return true;
  return false;
}	
function chequea_form(form)
{		
  if (form.titulo.value == "")
  {
    alert ("Por favor intoduzca un titulo en espaņol");
    form.titulo.focus();
    return false;		
  }
  if (form.titulo_ing.value == "")
  {
    alert ("Por favor intoduzca un titulo en ingles");
      form.titulo_ing.focus();
      return false;		
  }
  if (form.texto.value == "")
  {
    alert ("Por favor intoduzca un texto en espaņol");
      form.texto.focus();
      return false;		
  }
  if (form.texto_ing.value == "")
  {
    alert ("Por favor intoduzca un texto en ingles");
      form.texto_ing.focus();
      return false;		
  }
  if (isNotLink(form.link.value))
  {
      alert ("Por favor intoduzca el link externo, es un requisito incluir http://");
      form.link.focus();
      return false;		
  }
  return true;
}

// Precarga de imagenes menu_p, intro
var myimages=new Array()

function preloadimages(){
	for (i=0;i<preloadimages.arguments.length;i++){
	myimages[i]=new Image()
	myimages[i].src=preloadimages.arguments[i]
	}
}

preloadimages("imag/intro_entrar_ing_on.gif","imag/intro_entrar_on.gif","imag/intro_saltear_ing_on.gif","imag/intro_saltear_on.gif",
			  "imag/boton_1_e_on.gif","imag/boton_1_ing_e_on.gif","imag/boton_2_s_on.gif","imag/boton_2_ing_s_on.gif","imag/boton_3_p_on.gif","imag/boton_3_ing_p_on.gif","imag/boton_4_c_on.gif","imag/boton_4_ing_c_on.gif","imag/boton_5_l_on.gif","imag/boton_5_ing_l_on.gif",
			  "imag/idioma_0_on.gif","imag/idioma_0_ing_on.gif")