function valida(frm){

	var productos
	for (i = 0; i <= 19; i++ ){
		if (document.main_booking_form.tarif_rem[i]){
			if (document.main_booking_form.tarif_rem[i].checked){
				productos = document.main_booking_form.tarif_rem[i].value
				if (document.main_booking_form.tarif_rem[i].value == 'XHXP'){
					var fecha, dia, mes, ano, X;
				
					if ( document.getElementById('day').value < 10 ){X='0'}else{X=''};	
					dia = X+document.getElementById('day').value;
					if ( document.getElementById('month').value < 10 ){X='0'}else{X=''};
					mes = X+document.getElementById('month').value; 
					ano = document.getElementById('year').value; 
					fecha = ano+mes+dia;
					//alert(fecha);
					if((fecha < 20081118)||(fecha > 20101231)){
						alert("Este producto sólo se vende hasta el 31 de Diciembre 2010."); 
						return false;
					}						
					document.main_booking_form.xperience.value = 1; 
				}
			}
		}
	}

	document.main_booking_form.pkt.value = document.main_booking_form.day.value+','+document.main_booking_form.month.value+','+document.main_booking_form.year.value+';'+productos+ '-A' + ',' +document.main_booking_form.adultos.value 
	if (document.main_booking_form.menores.value != "0"){
	document.main_booking_form.pkt.value = document.main_booking_form.pkt.value + ';'+productos + '-N' + ',' + document.main_booking_form.menores.value
	}
	}

function paquetes() {
   obj1=document.getElementById("paketes"); 
   obj2=document.getElementById("xelhaai");
   obj3=document.getElementById("xhxp");
   obj4=document.getElementById("tourxelha");
   obj5=document.getElementById("tourtulumxelha");
     
   obj1.style.display="block"; 
   obj2.style.display="none";
   obj3.style.display="none";
   obj4.style.display="none";
   obj5.style.display="none";
   
   location.reload();

}

function xelhaai() {
	
	if (document.main_booking_form.day.selectedIndex == 0 || document.main_booking_form.month.selectedIndex == 0 || document.main_booking_form.year.selectedIndex == 0){
		alert("Por favor selecciona la fecha de tu visita")
	}
	else {
    
   obj1=document.getElementById("paketes"); 
   obj2=document.getElementById("xelhaai");
   obj3=document.getElementById("xhxp");
   obj4=document.getElementById("tourxelha");
   obj5=document.getElementById("tourtulumxelha");
      
   obj1.style.display="none"; 
   obj2.style.display="block";
   obj3.style.display="none";
   obj4.style.display="none";
   obj5.style.display="none";
   }
}

function xperiencexh() {

	if (document.main_booking_form.day.selectedIndex == 0 || document.main_booking_form.month.selectedIndex == 0 || document.main_booking_form.year.selectedIndex == 0){
		alert("Por favor selecciona la fecha de tu visita")
	}
	else {
    
   obj1=document.getElementById("paketes"); 
   obj2=document.getElementById("xelhaai");
   obj3=document.getElementById("xhxp");
   obj4=document.getElementById("tourxelha");
   obj5=document.getElementById("tourtulumxelha");
      
   obj1.style.display="none"; 
   obj2.style.display="none";
   obj3.style.display="block";
   obj4.style.display="none";
   obj5.style.display="none";
   }
}

function tourxelha() {

	if (document.main_booking_form.day.selectedIndex == 0 || document.main_booking_form.month.selectedIndex == 0 || document.main_booking_form.year.selectedIndex == 0){
		alert("Por favor selecciona la fecha de tu visita")
	}
	else {

   obj1=document.getElementById("paketes"); 
   obj2=document.getElementById("xelhaai");
   obj3=document.getElementById("xhxp");
   obj4=document.getElementById("tourxelha");
   obj5=document.getElementById("tourtulumxelha");
      
   obj1.style.display="none"; 
   obj2.style.display="none";
   obj3.style.display="none";
   obj4.style.display="block";
   obj5.style.display="none";
   }
}

function tourtulumxelha() {

	if (document.main_booking_form.day.selectedIndex == 0 || document.main_booking_form.month.selectedIndex == 0 || document.main_booking_form.year.selectedIndex == 0){
		alert("Por favor selecciona la fecha de tu visita")
	}
	else {

   obj1=document.getElementById("paketes"); 
   obj2=document.getElementById("xelhaai");
   obj3=document.getElementById("xhxp");
   obj4=document.getElementById("tourxelha");
   obj5=document.getElementById("tourtulumxelha");
      
   obj1.style.display="none"; 
   obj2.style.display="none";
   obj3.style.display="none";
   obj4.style.display="none";
   obj5.style.display="block";
   }
}