/* jQuery.preloader - v0.95 - K Reeve aka BinaryKitten
*
* v0.95
* 	# Note - keeping below v1 as really not sure that I consider it public usable.
* 	# But it saying that it does the job it was intended to do.
* 	Added Completion of loading callback.
* 	Main Reworking With Thanks to Remy Sharp of jQuery for Designers
*
*
* v0.9
* 	Fixed .toString being .toSteing
*
* v0.8
*		Fixed sheet.href being null error (was causing issues in FF3RC1)
*
* v0.7
*		Remade the preLoadImages from jQuery to DOM
*
* v0.6
* 		Fixed IE6 Compatability!
*		Moved from jQuery to DOM
*
* v0.5
* 		Shifted the additionalimages loader in the preLoadAllImages so it wasn't called multiple times
* 		Created secondary .preLoadImages to handle additionalimages and so it can be called on itself
*/

var cache = [];
(function ($) {
  $.preLoadImages = function(imageList,callback) 
  {
    var pic = [], i, total, loaded = 0;
	if (typeof imageList != 'undefined') 
    {
	  if ($.isArray(imageList)) 
      {
//alert("load: " + imageList.length);      
	  	total = imageList.length; // used later
	  	for (i=0; i < total; i++) 
        {
	      pic[i] = new Image();
          // order is very important - set function first!
		  pic[i].onload = function() 
          {
		    loaded++; // should never hit a race condition due to JS's non-threaded nature
			if (loaded == total) 
            {
//alert("loaded: " + imageList.length);      
			  if ($.isFunction(callback)) 
              {
			    callback();
			  }
		    }
		  };
		  pic[i].src = imageList[i];
          var cacheImage = document.createElement('img');
          cacheImage.src = pic[i].src;
          cache.push(cacheImage);
		}
	  }
	  else 
      {
	    pic[0] = new Image();
		pic[0].onload = function() 
        {
		  if ($.isFunction(callback)) 
          {
		  	callback();
		  }
		}
		pic[0].src = imageList;
	  }
    }
    pic = undefined;
  };

  $.preLoadCSSImages = function(callback) 
  {
    var pic = [], i, imageList = [], loaded = 0, total, regex = new RegExp("url\((.*)\)",'i'),spl;
	var cssSheets = document.styleSheets, path,myRules,Rule,match,txt,img,sheetIdx,ruleIdx;
	for (sheetIdx=0;sheetIdx < cssSheets.length;sheetIdx++)
    {
	  var sheet = cssSheets[sheetIdx];
	  if (typeof sheet.href == 'string' && sheet.href.length > 0) 
      {
	    spl = sheet.href.split('/');spl.pop();path = spl.join('/')+'/';
	  }
	  else 
      {
	    path = './';
  	  }
	  myRules = sheet.cssRules ? sheet.cssRules : sheet.rules;
	  for (ruleIdx=0;ruleIdx < myRules.length;ruleIdx++) 
      {
	    Rule = myRules[ruleIdx];
		txt = Rule.cssText ? Rule.cssText : Rule.style.cssText;
		match = regex.exec(txt);
		if (match != null) 
        {
		  img = match[1].substring(1,match[1].indexOf(')',1));
		  if (img.substring(0,4) == 'http') 
          {
		    imageList[imageList.length] = img;
		  }
		  else if ( match[1].substring(1,2) == '/') 
          {
		    var p2 = path.split('/');p2.pop();p2.pop();p2x = p2.join("/");
			imageList[imageList.length] = p2x+img;
		  }
		  else 
          {
		    imageList[imageList.length] = path+img;
		  }
		}
	  };
	};

	total = imageList.length; // used later
	for (i=0; i < total; i++) 
    {
	  pic[i] = new Image();
	  pic[i].onload = function() 
      {
	    loaded++; // should never hit a race condition due to JS's non-threaded nature
		if (loaded == total) 
        {
		  if ($.isFunction(callback)) 
          {
		    callback();
  		  }
		}
	  };
	  pic[i].src = imageList[i];
	}

  };
  $.preLoadAllImages = function(imageList,callback) 
  {
    if (typeof imageList != 'undefined') 
    {
	  if ($.isFunction(imageList)) 
      {
	    callback = imageList;
  	  }
	  else if (!$.isArray(imageList)) 
      {
				imageList = [imageList];
	  }
	}
	$.preLoadCSSImages(function()
    {
	  if (imageList.length > 0) 
      {
	    $.preLoadImages(imageList,function()
        {
		  callback();
		});
  	  }
	  else 
      {
	    callback();
	  }
	});
  }
})(jQuery);