// JavaScript Document


function get_eur(panel, dolar){
	
	ajax = nuevoAjax();
	var envio = "ajax_currency.php";
	ajax.open("POST", envio, true);
	ajax.onreadystatechange = function(){
		if(ajax.readyState == 4){
			if (ajax.status == 200){
				get_currency(panel, dolar, ajax.responseText, 'EUR');
			}
			
		} 
	}
	
	ajax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	ajax.send("usd="+dolar);
}


function get_usd(euro){
	//alert(dolar);
	ajax = nuevoAjax();
	var envio = "ajax_currency.php";
	ajax.open("POST", envio, true);
	ajax.onreadystatechange = function(){
		if(ajax.readyState == 4){
			if (ajax.status == 200){
				return ajax.responseText;	
			}
			
		} 
	}
	
	ajax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	ajax.send("eur="+euro);
}

function get_currency(panel, importeUSD, importeEUR, currency){
//currency = divisa que se desea obtener

		
		if ( currency == 'USD' ){
					
			document.getElementById(panel).innerHTML=importeUSD+' $ <a href="javascript:get_eur(\''+panel+'\',\''+importeUSD+'\',\'\', \'EUR\');" title="Convertir de euro a dolar"><span style="font-style:italic; font-size:9px;">precio en &euro;</span></a>';
		}
		
		if ( currency == 'EUR' ){
			document.getElementById(panel).innerHTML=importeEUR+' <a href="javascript:get_currency(\''+panel+'\',\''+importeUSD+'\',\'\', \'USD\');" title="Convertir de euro a dolar"><span style="font-style:italic; font-size:9px;">precio en $</span></a>';
		}
		
	
}


function nuevoAjax(){
var xmlhttp=false;
	try 
	{
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	} 
	catch (e) 
	{
		try 
		{
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		} 
		catch (E) 
		{
	 		xmlhttp = false;
		}
	}
	if (!xmlhttp && typeof XMLHttpRequest!='undefined') 
	{
		xmlhttp = new XMLHttpRequest();
	}
return xmlhttp;
}