function getXMLHttp()
{
	var xmlHttp
	try
	{
		xmlHttp = new XMLHttpRequest();
	}
	catch(e)
	{
	 try
	 {
		xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
	 }
	 catch(e)
	 {
		try
		{
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch(e)
		{
			alert("Your browser does not support AJAX!")
			return false;
		}
	 }
	}
	return xmlHttp;
}

//GET
function getProperties()
{
	if(document.getElementById("order").value != 0)
	{
		var xmlHttp = getXMLHttp();
		
		xmlHttp.onreadystatechange = function()
		{
			if(xmlHttp.readyState == 4)
			{
				HandleGETResponse(xmlHttp.responseText);
			}
		}
		var url = "includes/get-props.php";
		var params = "order=" + document.getElementById("order").value;
		xmlHttp.open("GET", url + "?" + params, true);
		xmlHttp.send(null)
	}
}
function HandleGETResponse(response)
{
	document.getElementById('main').innerHTML = response;
}