/* ----- AXAJ ----- */
var kalk_httpRequest = null;
function kalk_makeRequest()
{
	kalk_httpRequest = null;

	if (window.XMLHttpRequest)
	{
		// Mozilla, Safari,...
		kalk_httpRequest = new XMLHttpRequest();
	}
	else if (window.ActiveXObject)
	{
		// IE
		try
		{
			kalk_httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
	    	try
			{
				kalk_httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
	    	}
			catch (e)
			{}
	  	}
	}

	if (!kalk_httpRequest)
		//neni podpora v prohlizeci
		return false;


	var castka = document.getElementById("castka").value;
	var doba_splaceni = document.getElementById("doba_splaceni").value;


	kalk_httpRequest.onreadystatechange = kalk_onReply;
	kalk_httpRequest.open('GET', "ajax.kalkulacka.php?castka=" + castka + '&doba_splaceni=' + doba_splaceni, true);
	kalk_httpRequest.send(null);

}

// AJAX - ziskani informaci o cene
function kalk_onReply()
{
	if (kalk_httpRequest.readyState == 4)
	{
		if (kalk_httpRequest.status == 200)
		{
			if (kalk_httpRequest.responseText.length > 0)
			{
				document.getElementById('splatka').value = kalk_httpRequest.responseText;
			}
	  	}
	}
}