var xmlhttp;

// Gets the value of a $_GET variable
function get(key_str) {
	if(window.location.search) {
		var query = window.location.search.substr(1);
		var pairs = query.split("&");
		for(var i = 0; i < pairs.length; i++) {
			var pair = pairs[i].split("=");
			if(unescape(pair[0]) == key_str)
				return unescape(pair[1]);
		}
	}
}

// Show activities sorted by year
function showIntergroup(intergroup,lang)
{
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	  {
	  alert ("Browser does not support HTTP Request");
	  return;
	  }
	var url="intergroups_results.php";
	url=url+"?ig="+intergroup;
	url=url+"&lang="+lang;
	url=url+"&sid="+Math.random();
	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function stateChanged()
{
	if (xmlhttp.readyState==4)
	{
		document.getElementById("results").innerHTML=xmlhttp.responseText;
	}
}

function GetXmlHttpObject()
{
	if (window.XMLHttpRequest)
	  {
		  // code for IE7+, Firefox, Chrome, Opera, Safari
		  return new XMLHttpRequest();
	  }
	if (window.ActiveXObject)
	  {
		  // code for IE6, IE5
		  return new ActiveXObject("Microsoft.XMLHTTP");
	  }
	return null;
}