// JavaScript Document

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
function validate(form)
{

  if (form.name.value.length < 1)
  {
    alert("Write at least one character in \"name\".");
    form.name.focus();
    return (false);
  }
  
  if (form.comments.value.length < 1)
  {
    alert("The field \"comments\". is empty");
    form.comments.focus();
    return (false);
  }

  var checkOK = "ABCDEFGHIJKLMNÑOPQRSTUVWXYZÁÉÍÓÚabcdefghijklmnñopqrstuvwxyzáéíóú ";
  var checkStr = form.name.value;
  var allValid = true;
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
  }
  if (!allValid)
  {
    alert("Write just letters in \"name\".");
    form.name.focus();
    return (false);
  }

  if(form.email.value.length > 0){
	  if ((form.email.value.indexOf ('@', 0) == -1)) { 
		alert("Write a valid email address in \"email\"."); 
		form.email.focus();
		return (false); 
	  }
  }
  return (true);
}


function vEmail(form)
{
	
   if (form.emailSubscribe.value.length < 1)
  {
    alert("Please write a avlid email address.");
    form.emailSubscribe.focus();
    return (false);
  }

  if(form.emailSubscribe.value.length > 0){
	  if ((form.emailSubscribe.value.indexOf ('@', 0) == -1)) { 
		alert("Write a valid email address in \"email\"."); 
		form.emailSubscribe.focus();
		return (false); 
	  }
  }
  return (true); 
}


function validar(form)
{

  if (form.nombre.value.length < 1)
  {
    alert("Escriba al menos una letra en \"nombre\".");
    form.nombre.focus();
    return (false);
  }
  
  if (form.comentarios.value.length < 1)
  {
    alert("El campo\"comentarios\". está vacío");
    form.comentarios.focus();
    return (false);
  }

  var checkOK = "ABCDEFGHIJKLMNÑOPQRSTUVWXYZÁÉÍÓÚabcdefghijklmnñopqrstuvwxyzáéíóú ";
  var checkStr = form.nombre.value;
  var allValid = true;
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
  }
  if (!allValid)
  {
    alert("Escribe solo letras en \"nombre\".");
    form.nombre.focus();
    return (false);
  }

  if(form.email.value.length > 0){
	  if ((form.email.value.indexOf ('@', 0) == -1)) { 
		alert("Escribe un email valido en \"email\"."); 
		form.email.focus();
		return (false); 
	  }
  }
  return (true);
}