Event.observe
	(
		window,
		'load',
		function ()
		{

			var menuElements = $$ ('#product-desc-images-th img');
			
			var ImageBig = $$ ('#product-desc-image-big');
			
			var ImageBig = ImageBig[0];
			
//					alert(ImageBig.src);			
			
			menuElements.each
			(
				function (element)
				{
					var originalName = element.src;
					//alert(originalName);
					var hoverName = element.src.replace ('.gif', '_s.gif');
					if(originalName.indexOf('_s')==-1) {
                                          //  alert('test');
                                            var image = new Image ();

                                            image.src = hoverName;

                                            Event.observe
                                            (
                                                    element,
                                                    'mouseover',
                                                    function ()
                                                    {
                                                            ImageBig.src = originalName;
                                                    }
                                            );

                                            Event.observe
                                            (
                                                    element,
                                                    'mouseout',
                                                    function ()
                                                    {
                                                            element.src = originalName;
                                                    }
                                            );
                                        }
				}
			);						
		}
	);