jQuery.fn.extend({
	everyTime: function (interval, label, fn, times, belay) {
		return this.each(function () {
			jQuery.timer.add(this, interval, label, fn, times, belay);
		});
	},
	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: {
		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) {
						if (label.hasOwnProperty(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]) {
							if (fn.hasOwnProperty(timers[label])) {
								window.clearInterval(timers[label][fn]);
								delete timers[label][fn];
							}
						}
					}
					
					for (ret in timers[label]) {
						if (ret.hasOwnProperty(timers[label])) {
							break;
						}
					}
					if (!ret) {
						ret = null;
						delete timers[label];
					}
				}
				
				for (ret in timers) {
					if (ret.hasOwnProperty(timers)) {
						break;
					}
				}
				if (!ret) { 
					element.$timers = null;
				}
			}
		}
	}
});

if (jQuery.browser.msie) {
	/* jQuery.timer.global is null in IE7
	jQuery(window).one("unload", function () {
		var global = jQuery.timer.global;
		for (var label in global) {
			if (label.hasOwnProperty(global)) {
				var els = global[label], i = els.length;
				while (--i) {
					jQuery.timer.remove(els[i], label);
				}
			}
		}
	}); */
}