<!--
  
function validar(form) {

if ((form.firstname.value == null) || (form.firstname.value=="")) {
 alert("Please enter your first name");
 form.firstname.focus();
 return false;
}

if ((form.surname.value == null) || (form.surname.value=="")) {
 alert("Please enter your Surname");
 form.surname.focus();
 return false;
}

if (!form.sex[0].checked && !form.sex[1].checked){
 alert("Please select your sex");
 return false;
}

if ((form.email.value == null) || (form.email.value=="") || (form.email.value.indexOf("@") == -1)) {
 alert("Please enter a valid address");
 form.email.focus();
 return false;
}	

op = form.country.selectedIndex;
opcion = form.country.options[op].value;
if (opcion=="Not Select") {
   alert('Please select your country');
   form.country.focus();
   return false;
}


if ((form.message.value == null) || (form.message.value=="")) {
 alert("Please enter your message");
 form.message.focus();
 return false;
}

if ((form.answer.value == null) || (form.answer.value=="")) {
 alert("Please enter your answer");
 form.answer.focus();
 return false;
}

return true;
}



<!-- Begin
var n=0;
var fadein_opacity= 0.04;

var enlace = new Array();
var imagen = new Array();
var preLoad = new Array();
	
enlace[0]="/learn-spanish/spain/";
imagen[0]="/images/titleimage01.jpg";
	
enlace[1]="/learn-french/france/";
imagen[1]="/images/titleimage02.jpg";

enlace[2]="/learn-english/australia/";
imagen[2]="/images/titleimage03.jpg";

enlace[3]="/learn-italian/italy/";
imagen[3]="/images/titleimage04.jpg";

	
function cambio()
{
	ima=document.getElementById('galeria')
	enl=document.getElementById('lin')

	if (navigator.appName == "Microsoft Internet Explorer") 
	{
		if (document.all) {
		ima.style.filter="blendTrans(duration=1)";
		ima.filters.blendTrans.Apply();
		ima.src=imagen[n];
		enl.href=enlace[n];
		}
		
		if (document.all) {
		ima.filters.blendTrans.Play();
		}
	}
	
	else
	{
		document.galeria.src=imagen[n];
		enl.href=enlace[n];
	}
		
n+=1;
					
if(n>(imagen.length-1))
n=0;
t=setTimeout('cambio()',3000);	
}

function valiaddurl(form) {

if ((form.firstname.value == null) || (form.firstname.value=="")) {
 alert("Please enter your first name");
 form.firstname.focus();
 return false;
}

if ((form.surname.value == null) || (form.surname.value=="")) {
 alert("Please enter your Surname");
 form.surname.focus();
 return false;
}

if ((form.email.value == null) || (form.email.value=="") || (form.email.value.indexOf("@") == -1)) {
 alert("Please enter a valid address");
 form.email.focus();
 return false;
}

op = form.country.selectedIndex;
opcion = form.country.options[op].value;
if (opcion=="Not Select") {
   alert('Please select your country');
   form.country.focus();
   return false;

}

if ((form.url.value == null) || (form.url.value=="")) {
 alert("Please enter the url of your site");
 form.url.focus();
 return false;
}

if ((form.title.value == null) || (form.title.value=="")) {
 alert("Please enter the title of your site");
 form.title.focus();
 return false;
}

if ((form.description.value == null) || (form.description.value=="")) {
 alert("Please enter the description of your site");
 form.description.focus();
 return false;
}


if ((form.reciprocal.value == null) || (form.reciprocal.value=="")) {
 alert("Please enter the url of reciprocal link LanguagesRomance.com");
 form.reciprocal.focus();
 return false;
}

if ((form.answer.value == null) || (form.answer.value=="")) {
 alert('Please select your answer');
 form.answer.focus();
 return false;
}

return true;
}

-->