function setCurrent(thumb) {
			Element.removeClassName(document.getElementsByClassName('current_picture')[0], 'current_picture');
			Element.addClassName(thumb, 'current_picture');
			changePic();
		}
		
	
		function changePic() {
			var thumb = document.getElementsByClassName('current_picture')[0];
		
		
			Element.update('feedBack', 'Loading picture...');
			$('main_picture').src = thumb.src.replace(/-Thumb/,"");
			
			Event.observe('main_picture', 'load', clearMessage, false);
			Event.observe('main_picture', 'error', showErrorMessage, false);
			
		}
		
		function clearMessage() {
			Element.update('feedBack', '');
		}

		
		function showErrorMessage() {
			Element.update('feedBack', 'Cannot find image');
		}