//Requires ajax.js
function fav_toggle(target, id, pid)
{
//	var loadingText = 'Please Wait';
//	target.innerHTML = loadingText;
	
	var ajax_toggle_fav = function()
	{
		if (ajaxRequest.readyState==4) {
			try {
				if (ajaxRequest.status == 200) {
					if (ajaxRequest.responseText == "0") {
						//target.innerHTML = "Removing..";
						//window.location.href = window.location.href;
						target.innerHTML = "Add";
						clearFav(id, pid);
					} else if (ajaxRequest.responseText == "1") {
						//target.innerHTML = "Adding..";
						//window.location.href = window.location.href;
						target.innerHTML = "Remove";
						setFav(id, pid);
					} else if (ajaxRequest.responseText == "-1") {
						alert ("Your session has expired, please re-login");
					} else {
						target.innerHTML = "Error";
						alert ("Bad Response " + ajaxRequest.responseText);
					}
					ajaxRequest = null;
				} else {
					ajaxRequest = null;
				}
			} catch (e) {
				ajaxRequest = null;
			}
		}
	}
	
	args = new Array();
	args["id"] = id;
	simpleAjaxQuery('/favourite_toggle.ajax', args, ajax_toggle_fav , true);
}

function setFav(id, pid)
{
	changeImage("photoMain_" + id, getFavUrl(pid));
}

function clearFav(id, pid)
{
	changeImage("photoMain_" + id, getNonFavUrl(pid));
}

function getFavUrl(id)
{
	return "/image_jpeg/219/145/85/ao%7Bfav%7D/property/main/" + id + ".jpg";
}

function getNonFavUrl(id)
{
	return "/image_jpeg/219/145/85/a/property/main/" + id + ".jpg";
}

function changeImage(id, src)
{
	var img_element = document.getElementById(id);
	img_element.src = src;
}