var debug = 1;

function get_xmlhttp()
{
	var xmlhttp;
	if (window.XMLHttpRequest)
	{
		// code for IE7+, Firefox, Chrome, Opera, Safari
		xmlhttp=new XMLHttpRequest();
	}
	else if (window.ActiveXObject)
	{
		// code for IE6, IE5
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	else
	{
		alert("Your browser does not support XMLHTTP!");
	}
if(debug)
{
	xmlhttp.onreadystatechange=function()
	{
		// TODO should use JSON
		if(xmlhttp.readyState==4 && xmlhttp.responseText != "")
		{
			alert(xmlhttp.responseText);
		}
	}
}
	return xmlhttp;
}

function enlargeItem(id, item, collection)
{
	var xmlhttp = get_xmlhttp();

	xmlhttp.onreadystatechange=function()
	{
		if(xmlhttp.readyState==4)
		{
			var elementID = "vergrootcontent";
			document.getElementById(elementID).innerHTML=xmlhttp.responseText;
		}
	}

	if(collection == "")
		xmlhttp.open("GET", "xmlhttp.php?p=html&id=" + id + "&item=" + item, true);
	else
		xmlhttp.open("GET", "xmlhttp.php?p=html&id=" + id + "&item=" + item + "&collection=" + collection, true);
	xmlhttp.send(null);
}