var xmlHttp;

function StateChangedCategories() 
{
	if (xmlHttp.readyState == "4" || xmlHttp.readyState == 200)
	{
		if (xmlHttp.responseText)
		{
			document.getElementById("show_makes").innerHTML = xmlHttp.responseText;
		}
	}
	else
	{
		document.getElementById("show_makes").innerHTML = '<select disabled name="city" style="width: 100%; font-size: 12px;"><option value="0">идёт загрузка...<\/option><\/select>';
	}
}
function getArea(area_str)
{
	xmlHttp = GetXmlHttpObject()
	var url = "/?area=" + area_str
	xmlHttp.onreadystatechange = StateChangedCategories
	xmlHttp.open("GET", url, true)
	xmlHttp.send(null)
}
function GetXmlHttpObject()
{
	var objXMLHttp = false;

	if(window.XMLHttpRequest)
	{
		try
		{
			objXMLHttp = new XMLHttpRequest();
		}
		catch(e)
		{
			objXMLHttp = false;
		}
	}
	else if(window.ActiveXObject)
	{
		try
		{
			objXMLHttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e)
		{
			try
			{
				objXMLHttp = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e)
			{
				objXMLHttp = false;
			}
		}
	}

	return objXMLHttp;
}