var xmlHttp

function showGallery(str) { 
	xmlHttp = GetXmlHttpObject();
	if (xmlHttp == null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	} 
	var url = "/gallery/topgallery.asp";
	url = url + "?ImageId="+str;
	url = url + "&sid="+Math.random();
	xmlHttp.onreadystatechange = stateChanged;
	xmlHttp.open("GET", url, true);
	xmlHttp.send(null);
}

function stateChanged() 
{ 
	if (xmlHttp.readyState == 4)
	{
		document.getElementById("showBanner").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;
}