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,
			's': 1000
		},
		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);
	}
});