var xmlHttp

function showService(str)
	{ 
	xmlHttp=GetXmlHttpObject()

	if (xmlHttp==null)
		{
		alert ("Browser does not support HTTP Request")
		return
		}

	var url="get_services.php"
	url=url+"?service="+str
	url=url+"&sid="+Math.random()
	xmlHttp.onreadystatechange=stateChanged 
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
	}
	function stateChanged() 
	{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
		{ 
		document.getElementById("service").innerHTML=xmlHttp.responseText 
		} 
	}
	function GetXmlHttpObject()
	{
	var xmlHttp=null;
	try
		{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
		}
	catch (e)
		{
		// Internet Explorer
		try
			{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
			}
			catch (e)
			{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}
		}
	return xmlHttp;
	}