jQuery.fn.crossSlide = function(opts, plan) {
	var self = this, self_width = this.width(), self_height = this.height();
	function format(str) {
		for (var i = 1; i < arguments.length; i++)
			str = str.replace(new RegExp('\\{' + (i-1) + '}', 'g'), arguments[i]);
		return str;
	}
	function abort() {
		arguments[0] = 'crossSlide: ' + arguments[0];
		throw new Error(format.apply(null, arguments));
	}
	(function(proceed) {
		var n_loaded = 0;
		function loop(i, img){
			img.onload = function(e) {
				n_loaded++;
				plan[i].width = img.width;
				plan[i].height = img.height;
				if (n_loaded == plan.length) proceed();
			}
			if(!plan[i].src) plan[i].src = "http://images.smulweb.nl/v2_1/1x1.gif";
			img.src = plan[i].src;
			if (i + 1 < plan.length) loop(i + 1, new Image());
		}
		loop(0, new Image());
	})
	(function(){
		function position_to_css(p, phase) {
			switch (phase) {
				case 1:
					var pos = 0;
					break;
				case 2:
					var pos = fade_ms / (p.time_ms + 2 * fade_ms);
					break;
				case 3:
					var pos = 1 - fade_ms / (p.time_ms + 2 * fade_ms);
					break;
				case 4:
					var pos = 1;
					break;
			}
			return {
				left:   Math.round(p.from.left   + pos * (p.to.left   - p.from.left  )),
				top:    Math.round(p.from.top    + pos * (p.to.top    - p.from.top   )),
				width:  Math.round(p.from.width  + pos * (p.to.width  - p.from.width )),
				height: Math.round(p.from.height + pos * (p.to.height - p.from.height))
			};
		}
		var fade_ms = Math.round(opts.fade * 1000);
		if (opts.sleep) var sleep = Math.round(opts.sleep * 1000);
		if (opts.speed) var speed = opts.speed / 1000, fade_px = Math.round(fade_ms * speed);
		self.empty().css({ overflow: 'hidden', padding: 0 });
		if (! /^(absolute|relative|fixed)$/.test(self.css('position'))) self.css({ position: 'relative' });
		if (opts.shuffle) plan.sort(function() { return Math.random() - 0.5; });
		for (var i = 0; i < plan.length; ++i) {
			var p = plan[i];
			if (speed) {
				p.time_ms = Math.round(slide_px / speed);
			}
			var elm;
			if (p.href){
				if(p.target == '' || !p.target) p.target = '_blank';
				if(p.add_class == '' || !p.add_class) p.add_class = '';
				if(p.src == '' || !p.src) p.src = '';
				if(p.add_title == '' || !p.add_title) p.add_title = '';
				elm = jQuery(format('<a href="{0}" target="{2}" title="{4}" class="{3}"></a>&nbsp;\n', p.href, p.src,p.target,p.add_class,p.add_title));
			} else {
				elm = jQuery(format('<img src="{0}"/>', p.src));
			}
			if (p.onclick) elm.click(p.onclick);
			if (p.alt) elm.find('img').attr('alt', p.alt);
			elm.appendTo(self);
		}
		speed = undefined;
		var imgs = self.find('a').css({ position: 'absolute', visibility: 'hidden', top: 0, left: 0, border: 0 });
		imgs.eq(0).css({ visibility: 'visible' });
		if (! sleep) imgs.eq(0).css(position_to_css(plan[0], 2));
		var countdown = opts.loop;
		function create_chain(i, chainf) {
			if (i % 2 == 0) {
				if (sleep) {
					var i_sleep = i / 2, i_hide = (i_sleep - 1 + plan.length) % plan.length, img_sleep = imgs.eq(i_sleep), img_hide = imgs.eq(i_hide);
					var newf = function() { img_hide.css('visibility', 'hidden'); setTimeout(chainf, sleep); };
				} else {
					var i_slide = i / 2, i_hide = (i_slide - 1 + plan.length) % plan.length, img_slide = imgs.eq(i_slide), img_hide = imgs.eq(i_hide), time = plan[i_slide].time_ms, slide_anim = position_to_css(plan[i_slide], 3);
					var newf = function() { img_hide.css('visibility', 'hidden'); img_slide.animate(slide_anim, time, 'linear', chainf); };
				}
			} else {
				if (sleep) {
					var i_from = Math.floor(i / 2), i_to = Math.ceil(i / 2) % plan.length, img_from = imgs.eq(i_from), img_to = imgs.eq(i_to), from_anim = {}, to_init = { visibility: 'visible' }, to_anim = {};
					if (i_to > i_from) {
						to_init.opacity = 0;
						to_anim.opacity = 1;
					} else {
						from_anim.opacity = 0;
					}
					var newf = function() {
						img_to.css(to_init);
						if (from_anim.opacity != undefined) img_from.animate(from_anim, fade_ms, 'linear', chainf);
						else img_to.animate(to_anim, fade_ms, 'linear', chainf);
					};
				} else {
					var i_from = Math.floor(i / 2), i_to = Math.ceil(i / 2) % plan.length, img_from = imgs.eq(i_from), img_to = imgs.eq(i_to), from_anim = position_to_css(plan[i_from], 4), to_init = position_to_css(plan[i_to], 1), to_anim = position_to_css(plan[i_to], 2);
					if (i_to > i_from) {
						to_init.opacity = 0;
						to_anim.opacity = 1;
					} else {
						from_anim.opacity = 0;
					}
					to_init.visibility = 'visible';
					var newf = function() { img_from.animate(from_anim, fade_ms, 'linear'); img_to.css(to_init); img_to.animate(to_anim, fade_ms, 'linear', chainf);};
				}
			}
			if (opts.loop && i == plan.length * 2 - 2) {
				var newf_orig = newf;
				newf = function() { if (--countdown) newf_orig(); }
			}
			if (i > 0) return create_chain(i - 1, newf);
			else return newf;
		}
		var animation = create_chain(plan.length * 2 - 1, function() { return animation(); });
		animation();
	});
	return self;
};