function mostrar_ayuda() 
{
	var contenedor=document.getElementById("ayuda");
	contenedor.style.display='block';
}

function ocultar_ayuda() 
{
	var contenedor=document.getElementById("ayuda");
	contenedor.style.display='none';
}

function activar_acepto(){
	
if((document.getElementById('check').checked==true)){
	document.getElementById('acepto').disabled=false;
    /*document.getElementById('acepto').style.opacity=1;*/
	document.getElementById('acepto').src='http://www.hotel-sur.com/img/front/comunes/boton_pagar.png';
    document.getElementById('acepto').focus();
	/*document.getElementById("capa_errores").style.display = "block";
	document.getElementById("capa_errores2").style.display = "block";
	document.getElementById("capa_errores3").style.display = "block";
	document.getElementById("capa_errores4").style.display = "block";
	document.getElementById("capa_errores5").style.display = "block";*/

	}else{
	document.getElementById('acepto').disabled=true;
    document.getElementById('acepto').src='http://www.hotel-sur.com/img/front/comunes/boton_pagar_apagado.png';
	/*document.getElementById("capa_errores").style.display = "none";
	document.getElementById("capa_errores2").style.display = "none";
	document.getElementById("capa_errores3").style.display = "none";
	document.getElementById("capa_errores4").style.display = "none";
	document.getElementById("capa_errores5").style.display = "none";*/
	}

}

function activar_acepto_eng(){
	
if((document.getElementById('check').checked==true)){
	document.getElementById('acepto').disabled=false;
    /*document.getElementById('acepto').style.opacity=1;*/
	document.getElementById('acepto').src='http://www.hotel-sur.com/img/front/comunes/boton_pagar_eng.png';
    document.getElementById('acepto').focus();
	/*document.getElementById("capa_errores").style.display = "block";
	document.getElementById("capa_errores2").style.display = "block";
	document.getElementById("capa_errores3").style.display = "block";
	document.getElementById("capa_errores4").style.display = "block";
	document.getElementById("capa_errores5").style.display = "block";*/

	}else{
	document.getElementById('acepto').disabled=true;
    document.getElementById('acepto').src='http://www.hotel-sur.com/img/front/comunes/boton_pagar_apagado_eng.png';
	/*document.getElementById("capa_errores").style.display = "none";
	document.getElementById("capa_errores2").style.display = "none";
	document.getElementById("capa_errores3").style.display = "none";
	document.getElementById("capa_errores4").style.display = "none";
	document.getElementById("capa_errores5").style.display = "none";*/
	}

}

function activar_buscar(){
	
if(document.getElementById('check').checked==true){
	document.getElementById('acepto').disabled=false;
    /*document.getElementById('acepto').style.opacity=1;*/
	document.getElementById('acepto').src='http://www.hotel-sur.com/img/front/comunes/boton_pagar.png';
    document.getElementById('acepto').focus();


	}else{
	document.getElementById('acepto').disabled=true;
    document.getElementById('acepto').src='http://www.hotel-sur.com/img/front/comunes/boton_pagar_apagado.png';

	}

}

function VerificarFormulario(){
	flag = false;
	email=document.getElementById("email").value;
	if(email.indexOf('@',0)==-1 || email.indexOf(';',0)!=-1
	|| email.indexOf(' ',0)!=-1 || email.indexOf('/',0)!=-1
	|| email.indexOf(';',0)!=-1 || email.indexOf('<',0)!=-1
	|| email.indexOf('>',0)!=-1 || email.indexOf('*',0)!=-1
	|| email.indexOf('|',0)!=-1 || email.indexOf('`',0)!=-1
	|| email.indexOf('&',0)!=-1 || email.indexOf('$',0)!=-1
	|| email.indexOf('!',0)!=-1 || email.indexOf('"',0)!=-1
	|| email.indexOf(':',0)!=-1) {
		alert("Dirección incorrecta");
		document.getElementById('check').checked==false;
		document.getElementById('acepto').disabled=true;
	}
	else{
		flag = true;
	}
	
	tarjeta = document.getElementById("numero_tarjeta");
	if(tarjeta.length == 16) {
		flag = true;
		document.getElementById('check').checked==true;
		document.getElementById('acepto').disabled=false;
		
		
	}
	else{
		alert("El número de tarjeta debe tener 16 caracteres.");
		document.getElementById('check').checked==false;
		document.getElementById('acepto').disabled=true;
		flag = false;
	}
	
	tarjeta = document.getElementById("numero_tarjeta");
	for(var i=0; i<tarjeta.length; i++) {
		var ch=tarjeta.substring(i,i+1);
		if(ch < "0" || ch > "9") {
			alert("El número de tarjeta sólo puede contener números.");
			document.getElementById('check').checked==false;
			document.getElementById('acepto').disabled=true;
			flag = false;
		}
		else{
			flag = true;
			document.getElementById('check').checked==true;
			document.getElementById('acepto').disabled=false;
		}
	}
	
}