var xmlHttp=createxmlhttprequest();
function createxmlhttprequest()
{
	var xmlHttp;
	var msXml = new Array();
	msXml[0] = "Microsoft.XMLHTTP";
	msXml[1] = "MSXML2.XMLHTTP.5.0";
	msXml[2] = "MSXML2.XMLHTTP.4.0";
	msXml[3] = "MSXML2.XMLHTTP.3.0";
	msXml[4] = "MSXML2.XMLHTTP";
	try
	{
		xmlHttp = new XMLHttpRequest();
	}
	catch(e)
	{
		for (var i = 0; i < msXml.length && !xmlHttp; i++) 
		{
			try {
					xmlHttp = new ActiveXObject(msXml[i]);
					break;
			    } 
			catch (e)
			{
				xmlHttp = new xmlHttpRequest();
			}
		}
	 }
	 if(!xmlHttp)
	 {
		 alert("Object error!");
	 }
	 else
	 {
		 return xmlHttp;
	 }

}


function makeRequest(queryString) {
	if(xmlHttp)
	{
		try
		{
	    	 xmlHttp.open('post', 'seo.php', true);
	  		 xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
			 xmlHttp.onreadystatechange = getRequest;
	  		 xmlHttp.send(queryString);
		}
		catch(e)
		{
			alert("Open server error!");
		}
	}
	else
	{
		alert("Object error!");
	}
}



function getRequest() {
	if(xmlHttp.readyState==4) { 
		if(xmlHttp.status==200) {
			$('seo_result').innerHTML =  xmlHttp.responseText;
		}
	}	
}