/**
 * jQuery.timers - Timer abstractions for jQuery
 * Written by Blair Mitchelmore (blair DOT mitchelmore AT gmail DOT com)
 * Licensed under the WTFPL (http://sam.zoy.org/wtfpl/).
 * Date: 2009/10/16
 *
 * @author Blair Mitchelmore
 * @version 1.2
 *
 **/

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);
								});
					});