/*
// Infinite Scroll jQuery plugin
// copyright Paul Irish, licensed GPL & MIT
// version 1.5.100504

// home and docs: http://www.infinite-scroll.com
 */
(function(A) {
	A.fn.infinitescroll = function(R, O) {
		function E() {
			if (B.debug) {
				window.console && console.log.call(console, arguments)
			}
		}
		function H(T) {
			for ( var S in T) {
				if (S.indexOf && S.indexOf("Selector") > -1
						&& A(T[S]).length === 0) {
					E("Your " + S + " found no elements.");
					return false
				}
				return true
			}
		}
		function N(S) {
			S.match(C) ? S.match(C)[2] : S;
			if (S.match(/^(.*?)\b2\b(.*?$)/)) {
				S = S.match(/^(.*?)\b2\b(.*?$)/).slice(1)
			} else {
				if (S.match(/^(.*?)2(.*?$)/)) {
					if (S.match(/^(.*?page=)2(\/.*|$)/)) {
						S = S.match(/^(.*?page=)2(\/.*|$)/).slice(1);
						return S
					}
					E("Trying backup next selector parse technique. Treacherous waters here, matey.");
					S = S.match(/^(.*?)2(.*?$)/).slice(1)
				} else {
					if (S.match(/^(.*?page=)1(\/.*|$)/)) {
						S = S.match(/^(.*?page=)1(\/.*|$)/).slice(1);
						return S
					}
					E("Sorry, we couldn't parse your Next (Previous Posts) URL. Verify your the css selector points to the correct A tag. If you still get this error: yell, scream, and kindly ask for help at infinite-scroll.com.");
					K.isInvalidPage = true
				}
			}
			return S
		}
		function L() {
			return B.localMode ? (A(K.container)[0].scrollHeight && A(K.container)[0].scrollHeight)
					: A(document).height()
		}
		function F() {
			var S = 0
					+ L()
					- (B.localMode ? A(K.container).scrollTop() : (A(
							K.container).scrollTop() || A(
							K.container.ownerDocument.body).scrollTop()))
					- A(B.localMode ? K.container : window).height();
			E("math:", S, K.pixelsFromNavToBottom);
			return (S - B.bufferPx < K.pixelsFromNavToBottom)
		}
		function M() {
			K.loadingMsg.find("img").hide().parent().find("div").html(
					B.donetext).animate( {
				opacity : 1
			}, 2000).fadeOut("normal");
			B.errorCallback()
		}
		function D() {
			if (K.isDuringAjax || K.isInvalidPage || K.isDone) {
				return
			}
			if (!F(B, K)) {
				return
			}
			A(document).trigger("retrieve.infscr")
		}
		function G() {
			K.isDuringAjax = true;
			K.loadingMsg.appendTo(B.contentSelector).show();
			A(B.navSelector).hide();
			K.currPage++;
			E("heading into ajax", Q);
			J = A(B.contentSelector).is("table") ? A("<tbody/>") : A("<div/>");
			P = document.createDocumentFragment();
			J.load(Q.join(K.currPage) + " " + B.itemSelector, null, I)
		}
		function I() {
			if (K.isDone) {
				M();
				return false
			} else {
				var T = J.children().get();
				if (T.length == 0) {
					return A.event.trigger("ajaxError", [ {
						status : 404
					} ])
				}
				while (J[0].firstChild) {
					P.appendChild(J[0].firstChild)
				}
				A(B.contentSelector)[0].appendChild(P);
				K.loadingMsg.fadeOut("normal");
				if (B.animate) {
					var S = A(window).scrollTop()
							+ A("#infscr-loading").height() + B.extraScrollPx
							+ "px";
					A("html,body").animate( {
						scrollTop : S
					}, 800, function() {
						K.isDuringAjax = false
					})
				}
				O.call(A(B.contentSelector)[0], T);
				if (!B.animate) {
					K.isDuringAjax = false
				}
			}
		}
		A.browser.ie6 = A.browser.msie && A.browser.version < 7;
		var B = A.extend( {}, A.infinitescroll.defaults, R), K = A.infinitescroll, J, P;
		O = O || function() {
		};
		if (!H(B)) {
			return false
		}
		K.container = B.localMode ? this : document.documentElement;
		B.contentSelector = B.contentSelector || this;
		var C = /(.*?\/\/).*?(\/.*)/, Q = A(B.nextSelector).attr("href");
		if (!Q) {
			E("Navigation selector not found");
			return
		}
		Q = N(Q);
		if (B.localMode) {
			A(K.container)[0].scrollTop = 0
		}
		K.pixelsFromNavToBottom = L()
				+ (K.container == document.documentElement ? 0 : A(K.container)
						.offset().top) - A(B.navSelector).offset().top;
		K.loadingMsg = A('<div id="infscr-loading" style="text-align: center;"><img alt="Loading..." src="'
				+ B.loadingImg + '" /><div>' + B.loadingText + "</div></div>");
		(new Image()).src = B.loadingImg;
		A(document).ajaxError(function(T, U, S) {
			E("Page not found. Self-destructing...");
			if (U.status == 404) {
				M();
				K.isDone = true;
				A(B.localMode ? this : window).unbind("scroll.infscr")
			}
		});
		A(B.localMode ? this : window).bind("scroll.infscr", D).trigger(
				"scroll.infscr");
		A(document).bind("retrieve.infscr", G);
		return this
	};
	A.infinitescroll = {
		defaults : {
			debug : false,
			preload : false,
			nextSelector : "div.navigation a:first",
			loadingImg : "http://www.infinite-scroll.com/loading.gif",
			loadingText : "<em>Loading the next set of posts...</em>",
			donetext : "<em>Congratulations, you've reached the end of the internet.</em>",
			navSelector : "div.navigation",
			contentSelector : null,
			extraScrollPx : 150,
			itemSelector : "div.post",
			animate : false,
			localMode : false,
			bufferPx : 40,
			errorCallback : function() {
			}
		},
		loadingImg : undefined,
		loadingMsg : undefined,
		container : undefined,
		currPage : 1,
		currDOMChunk : null,
		isDuringAjax : false,
		isInvalidPage : false,
		isDone : false
	}
})(jQuery);