function getPrice()
{
	var url = 'price.php';

	if (document.getElementById('where').value!='' && document.getElementById('people').value!='' && document.getElementById('currency').value!='')
	{
		url = url +'?t='+ document.getElementById('where').value + '&p='+ document.getElementById('people').value + '&c=' + document.getElementById('currency').value;
	}
	else {
		document.getElementById('price').value = '-';
		return false;
	}

	if(typeof XMLHttpRequest != "undefined")
	{ /* Code for: IE 7 Firefox, Mozilla etc Safari Opera */ 
	  httpRequest = new XMLHttpRequest(); 
	} 
	else if(typeof window.ActiveXObject != "undefined")
	{ /*  Code for: IE 5 IE 6 */ 
	  httpRequest = new ActiveXObject("Msxml2.XMLHTTP"); 
	}
	httpRequest.open("GET", url, true);
	httpRequest.onreadystatechange= function () {processRequest('price'); } ;
	httpRequest.send(null);
}

function getVianoPrice()
{
	var url = 'viano-price.php';

	if (document.getElementById('where').value!='' && document.getElementById('currency').value!='')
	{
		url = url +'?t='+ document.getElementById('where').value + '&c=' + document.getElementById('currency').value;
	}
	else {
		document.getElementById('price').value = '-';
		return false;
	}

	if(typeof XMLHttpRequest != "undefined")
	{ /* Code for: IE 7 Firefox, Mozilla etc Safari Opera */ 
	  httpRequest = new XMLHttpRequest(); 
	} 
	else if(typeof window.ActiveXObject != "undefined")
	{ /*  Code for: IE 5 IE 6 */ 
	  httpRequest = new ActiveXObject("Msxml2.XMLHTTP"); 
	}
	httpRequest.open("GET", url, true);
	httpRequest.onreadystatechange= function () {processRequest('price'); } ;
	httpRequest.send(null);
}        

function processRequest(mistoZobrazeni)
{
	if (httpRequest.readyState == 4)
	{
		if(httpRequest.status == 200)
		{
			var mistoZobrazeniVar = document.getElementById(mistoZobrazeni);
			mistoZobrazeniVar.value = httpRequest.responseText;
			if (mistoZobrazeniVar.value == '-')
			{
				alert('This trip is available for only 1-8 people!');
			}
		}
	}
}