jQuery.fn.extend({
  /**
   *everyTime(interval : Integer | String, [label = interval : String], fn : Function, [times = 0 : Integer])
   *everyTime will add the defined function (fn)
   *as a timed event to run at a given time interval (interval) for a given number of times (times).
   *If times is set to 0, the number of times the method is called is unbounded.
   *A label is also set for the given timed event either to the provided string (label)
   *or to the string representation of the interval provided.
   *Additionally, the interval can be defined by using a string such as "3s" for 3 seconds.
   */
	everyTime: function(interval, label, fn, times, belay) {
		return this.each(function() {
			jQuery.timer.add(this, interval, label, fn, times, belay);
		});
	},
     /**oneTime(interval : Integer | String, [label = interval : String], fn : Function)
      *oneTime will call the defined function (fn) a certain amount of time (interval)
      *after being added to the elements in the jQuery object.
      *A label (label) is also set for the timed event either to the provided string (label)
      *or to the string representation of the interval provided.
      */
	oneTime: function(interval, label, fn) {
		return this.each(function() {
			jQuery.timer.add(this, interval, label, fn, 1);
		});
	},
     /**stopTime([label : Integer | String], [fn : Function])
      *stopTime will stop any timed events with the provided label (label) and function (fn).
      *If neither is specified, it will stop all
      *timed events acting on the elements in the jQuery object.
      *If only the function is provided,
      *then it will stop all timed events calling that function regardless of label.
      *Finally if only the label is provided,
      *it will stop all timed events given that label at initialization.
      */
	stopTime: function(label, fn) {
		return this.each(function() {
			jQuery.timer.remove(this, label, fn);
		});
	}
});

jQuery.extend({
	timer: {
		guid: 1,
		global: {},
		regex: /^([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 = parseInt(result[1], 10);
				var mult = this.powers[result[2]] || 1;
				return num * mult;
			} else {
				return value;
			}
		},
		add: function(element, interval, label, fn, times, belay) {
			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 (times && times.constructor != Number) {
				belay = !!times;
				times = 0;
			}
			
			times = times || 0;
			belay = belay || false;
			
			if (!element.$timers) 
				element.$timers = {};
			
			if (!element.$timers[label])
				element.$timers[label] = {};
			
			fn.$timerID = fn.$timerID || this.guid++;
			
			var handler = function() {
				if (belay && this.inProgress) 
					return;
				this.inProgress = true;
				if ((++counter > times && times !== 0) || fn.call(element, counter) === false)
					jQuery.timer.remove(element, label, fn);
				this.inProgress = false;
			};
			
			handler.$timerID = fn.$timerID;
			
			if (!element.$timers[label][fn.$timerID]) 
				element.$timers[label][fn.$timerID] = window.setInterval(handler,interval);
			
			if ( !this.global[label] )
				this.global[label] = [];
			this.global[label].push( element );
			
		},
		remove: function(element, label, fn) {
			var timers = element.$timers, 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 ) 
					element.$timers = null;
			}
		}
	}
});

if (jQuery.browser.msie)
	jQuery(window).one("unload", function() {
		var global = jQuery.timer.global;
		for ( var label in global ) {
			var els = global[label], i = els.length;
			while ( --i )
				jQuery.timer.remove(els[i], label);
		}
	});