function ajaxCall(url,functionName)
{ 
	var xhr;
	var data;
	try { xhr = new ActiveXObject('Msxml2.XMLHTTP'); }
	catch (e) 
	{
		try { xhr = new ActiveXObject('Microsoft.XMLHTTP'); }
		catch (e2)
		{
			try { xhr = new XMLHttpRequest(); }
			catch (e3) { xhr = false; }
		}
	}
	  
	xhr.onreadystatechange = function()
	{
		if(xhr.readyState == 4)
		{
			if(xhr.status == 200)
			{
				eval(functionName+'(xhr.responseText);');
			} else {
				eval(functionName+'("Error code: '+xhr.status+'");');
			}
		}
	}
	xhr.open("GET", url, true); 
	xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	xhr.send(data); 
}