here is what flickr_fetchImageInfo.php returns to be eval'd:
{info: ok, title: img_1248, description: morning glory, comments: 2, uploaded: September 12, 2006}


here's the js:

var ajaxObj;
var image_info;

if (window.XMLHttpRequest)
{
	ajaxObj = new XMLHttpRequest();
} else if (window.ActiveXObject) {
	ajaxObj = new ActiveXObject("Microsoft.XMLHTTP");
}

function fetchInfo(id) 
{
	ajaxObj.open("get","flickr_fetchImageInfo.php?id="+id,true);

	ajaxObj.onreadystatechange = function() {
		if (ajaxObj.readyState == 4 &&	ajaxObj.status == 200) {
			image_info = eval(ajaxObj.responseText);
			update_info();
		}
	}
	ajaxObj.send(null);
}

function update_info(title,comments,dateuploaded){
	var info = document.getElementById("info");
	var response = image_info[0].info;
	alert(response);
	if (response == "ok") {
		info.innerHTML = "";
		info.innerHTML += "<span class=\"info_item\">Title: <span class=\"highlite\">"+image_info[0].title+"</span></span>";
		info.innerHTML += "<span class=\"info_item\">Comments: <span class=\"highlite\">"+image_info[0].comments+"</span></span>";
		info.innerHTML += "<span class=\"info_item\">Uploaded on: <span class=\"highlite\">"+image_info[0].uploaded+"</span></span>";
	} else {
		info.innerHTML = "ERROR: " + image_info[0].error; 
	}
}