jQuery.preloadImages = function(images)
{
  for(var i = 0; i < images.length; i++)
  {
    jQuery("<img>").attr("src", images[i]);
  }
}


jQuery.fn.extend({
	everyTime: function(interval, label, fn, times) {
		return this.each(function() {
			jQuery.timer.add(this, interval, label, fn, times);
		});
	},
	oneTime: function(interval, label, fn) {
		return this.each(function() {
			jQuery.timer.add(this, interval, label, fn, 1);
		});
	},
	stopTime: function(label, fn) {
		return this.each(function() {
			jQuery.timer.remove(this, label, fn);
		});
	}
});

jQuery.extend({
	timer: {
		global: [],
		guid: 1,
		dataKey: "jQuery.timer",
		regex: /^([0-9]+(?:\.[0-9]*)?)\s*(.*s)?$/,
		powers: {
			// Yeah this is major overkill...
			'ms': 1,
			'cs': 10,
			'ds': 100,
			's': 1000,
			'das': 10000,
			'hs': 100000,
			'ks': 1000000
		},
		timeParse: function(value) {
			if (value == undefined || value == null)
				return null;
			var result = this.regex.exec(jQuery.trim(value.toString()));
			if (result[2]) {
				var num = parseFloat(result[1]);
				var mult = this.powers[result[2]] || 1;
				return num * mult;
			} else {
				return value;
			}
		},
		add: function(element, interval, label, fn, times) {
			var counter = 0;
			
			if (jQuery.isFunction(label)) {
				if (!times) 
					times = fn;
				fn = label;
				label = interval;
			}
			
			interval = jQuery.timer.timeParse(interval);

			if (typeof interval != 'number' || isNaN(interval) || interval < 0)
				return;

			if (typeof times != 'number' || isNaN(times) || times < 0) 
				times = 0;
			
			times = times || 0;
			
			var timers = jQuery.data(element, this.dataKey) || jQuery.data(element, this.dataKey, {});
			
			if (!timers[label])
				timers[label] = {};
			
			fn.timerID = fn.timerID || this.guid++;
			
			var handler = function() {
				if ((++counter > times && times !== 0) || fn.call(element, counter) === false)
					jQuery.timer.remove(element, label, fn);
			};
			
			handler.timerID = fn.timerID;
			
			if (!timers[label][fn.timerID])
				timers[label][fn.timerID] = window.setInterval(handler,interval);
			
			this.global.push( element );
			
		},
		remove: function(element, label, fn) {
			var timers = jQuery.data(element, this.dataKey), ret;
			
			if ( timers ) {
				
				if (!label) {
					for ( label in timers )
						this.remove(element, label, fn);
				} else if ( timers[label] ) {
					if ( fn ) {
						if ( fn.timerID ) {
							window.clearInterval(timers[label][fn.timerID]);
							delete timers[label][fn.timerID];
						}
					} else {
						for ( var fn in timers[label] ) {
							window.clearInterval(timers[label][fn]);
							delete timers[label][fn];
						}
					}
					
					for ( ret in timers[label] ) break;
					if ( !ret ) {
						ret = null;
						delete timers[label];
					}
				}
				
				for ( ret in timers ) break;
				if ( !ret ) 
					jQuery.removeData(element, this.dataKey);
			}
		}
	}
});

jQuery(window).bind("unload", function() {
	jQuery.each(jQuery.timer.global, function(index, item) {
		jQuery.timer.remove(item);
	});
});

function switchMainImage(new_image)
{
	$("#image-gallery-mainpic img").fadeOut("slow", function() {
		$("#image-gallery-mainpic img")[0].src=new_image;
		$("#image-gallery-mainpic img").fadeIn("slow");				
	} );			
}

stop_image_rotation = false;
current_item = 0;

$(document).ready(function(){ 
		images_to_preload = new Array();
		$("body").everyTime(5000, "rotator", function() 
		{
			if (current_item == (images_to_preload.length -1 ))
			 	 current_item = -1;
			
			current_item++;			
			if (!stop_image_rotation)
				switchMainImage(images_to_preload[current_item]);
		}
		);
		
		$("#image-gallery-thumbs img").each(function() { images_to_preload.push($(this)[0].src.replace('-sml', '-big'));});
		$.preloadImages(images_to_preload);
		$("#image-gallery-thumbs img").click(function() 
		{
			stop_image_rotation = true;
			new_image = $(this)[0].src.replace("-sml", "-big");
			switchMainImage(new_image);
		});
		
		// fix sidenav height so that main content doesn't wrap
		if ($("#content-read").height() > $("#sidenav").height())
		{
			$("#sidenav").height($("#content-read").height());
			$("#rhs").height($("#content-read").height() + 340);
		
		}
		
	});