var xmlHttp = createXmlHttpRequestObject();

function createXmlHttpRequestObject()
{
 var xmlHttp;
 try
 {
  xmlHttp = new XMLHttpRequest();
 }
 catch(e)
 {
  var XmlHttpVersions = new Array("MSXML2.XMLHTTP.6.0", "MSXML2.XMLHTTP.5.0", "MSXML2.XMLHTTP.4.0", "MSXML2.XMLHTTP.3.0", "MSXML2.XMLHTTP", "Microsoft.XMLHTTP");
  
	for (var i=0; i<XmlHttpVersions.length && !xmlHttp; i++)
	{
		try
		{
		 xmlHttp = new ActiveXObject(XmlHttpVersions[i]);
		}
		catch (e) {}
	}
 }
 
 if (!xmlHttp)
	alert("Ошибка создания объекта XMLHttpRequest.");
 else
	return xmlHttp;
 }


function selectSrok(str)
{
xmlhttp=createXmlHttpRequestObject();
if (xmlhttp==null)
{
alert ("Browser does not support HTTP Request");
return;
}
var url="select_srok.php";
url=url+"?q="+str;

xmlhttp.onreadystatechange=stateChanged;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}



function calculate()
{
xmlhttp=createXmlHttpRequestObject();
if (xmlhttp==null)
{
alert ("Browser does not support HTTP Request");
return;
}
var deposit = document.form1.deposit.value;	
var srok = document.form1.srok.value;	
var summa = document.form1.summa.value;	

var param = "deposit=" + deposit + "&srok=" + srok + "&summa=" + summa;


var url="calculator.php";
url=url+"?"+param;



xmlhttp.onreadystatechange=stateChangedCalc;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}


function stateChangedCalc()
{
if (xmlhttp.readyState==4)
{
document.getElementById("result").innerHTML=xmlhttp.responseText;
}
}


function stateChanged()
{
if (xmlhttp.readyState==4)
{
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}