/*
$.preloadImages("image1.gif", "/path/to/image2.png","some/image3.jpg");
*/

$.preloadImages = function()
	{
	  for(var i = 0; i<arguments.length; i++)
	  {
	    $("<img />").attr("src", arguments[i]);
	  }
	}

/*
$('.swapme').swapme('_over');
*/

$.fn.swapme = function(a)
{
	return this.each(function()
	{
		// bind the mouse events
		if($(this).get(0).tagName.toUpperCase() == 'IMG')
		{
			var original = $(this).attr("src");
			if(original.indexOf('_over') == -1)
			{
				// get the new src string
				var over = original.split('.');
				if(over.length >= 2)
				{
					// add before the extension if we have one
					over[over.length-2] += a;
					over = over.join('.');
				} else {
					over = original + a;
				}

				$(this).mouseover(function(){
					$(this).attr('src', over);
				}).mouseout(function(){
					$(this).attr('src', original);
				});
			}
		} else {
			var original = $(this).css("background-image");
			if(original.indexOf('_over') == -1)
			{
				// get the new src string
				var over = original.split('.');
				if(over.length >= 2)
				{
					// add before the extension if we have one
					over[over.length-2] += a;
					over = over.join('.');
				} else {
					over = original + a;
				}

				$(this).mouseover(function()
				{
					$(this).css({"background-image": over});
				}).mouseout(function()
				{
					$(this).css({"background-image": original});
				});
			}
		}
	});
}