var http_request_currency = false;
   function makePOSTRequestCurrency(url, parameters) {
      http_request_currency = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request_currency = new XMLHttpRequest();
         if (http_request_currency.overrideMimeType) {
            // set type accordingly to anticipated content type
            //http_request_currency.overrideMimeType('text/xml');
            http_request_currency.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request_currency = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request_currency = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request_currency) {
         alert('Не може да се създаде XMLHTTP обект');
         return false;
      }
      
      http_request_currency.onreadystatechange = alertContentsCurrency;
      http_request_currency.open('POST', url, true);
      http_request_currency.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request_currency.setRequestHeader("Content-length", parameters.length);
      http_request_currency.setRequestHeader("Connection", "close");
      http_request_currency.send(parameters);
   }

   function alertContentsCurrency() {
      if (http_request_currency.readyState == 4) {
         if (http_request_currency.status == 200) {
            //alert(http_request_currency.responseText);
            result = http_request_currency.responseText;
            document.getElementById('currencyOutput').innerHTML = result;
         } else {
            alert("Възникна проблем със заявката.\nМоля, опитайте по-късно!");
         }
      }
   }
   
   function getcurrency(obj) {
      var poststr = "city=";
      makePOSTRequestCurrency('src/currency-calculator/getcurrency.php', poststr);
   }


function autocurrencies() {
    if (Get_Cookie('moyatautocurrencies')) {
	clearInterval(autoupdatecurrencies);
	document.getElementById('autocurrencies').value = ' ';
	titlecurrency = "Автоматично обновяване: Изключено";
	document.cookie = "moyatautocurrencies=;expires=Thu, 01-Jan-1970 00:00:01 GMT;path=/;domain=.moyat.net";
	document.cookie = "moyatautocurrenciesint=;expires=Thu, 01-Jan-1970 00:00:01 GMT;path=/;domain=.moyat.net";
    } else {
	var intervalbox = prompt("Интервал на обновяване в минути, но не по-малко от 15.\nНевалидна стойност се равнява на 30 минути.", "30");
	if (intervalbox != '' && intervalbox != null) {
	    intervalcurrency = parseInt(intervalbox);
	    if (isNaN(intervalcurrency) || intervalcurrency < 15) {
		intervalcurrency = 30;
	    }
	    document.getElementById('autocurrencies').value = '*';
	    titlecurrency = "Автоматично обновяване: Включено, през "+intervalcurrency+" минути";
	    document.cookie = "moyatautocurrencies=1;expires=Thu, 01-Jan-2043 00:00:01 GMT;path=/;domain=.moyat.net";
	    document.cookie = "moyatautocurrenciesint="+intervalcurrency+";expires=Thu, 01-Jan-2043 00:00:01 GMT;path=/;domain=.moyat.net";
	    getcurrency();
	    autoupdatecurrencies = setInterval("getcurrency()", intervalcurrency*60*1000);
	}
    }
}