function getFileExtension(filename)
{var ext = /(^.+)\.([^.]+)$/.exec(filename);
  return ext;}
	var prepare_slider = function(){var x_pos = 0;var li_items_n = 0;var right_clicks = 0;var viewWindow = 5;var left_clicks = 0;var li_col = $('slider_list').getElements('li');li_col.each(function(li, index){size = li.getSize();x_pos += size.x;li_items_n++;li.getElement('img').setStyle('cursor','pointer');li.getElement('img').addEvent('click', function(){image_source = li.getElement('img').get('src');ext = getFileExtension(image_source);})})		
		right_clicks = li_items_n - viewWindow;total_clicks = li_items_n - viewWindow;$('slider_list').setStyle('position','relative');$('slider_list').setStyle('left','0px');$('slider_list').setStyle('width', x_pos+'px');var myFx = new Fx.Tween($('slider_list'), {transition: Fx.Transitions.Sine.easeOut, duration:700});myFx.addEvent('start', function(){ is_playing = true; });myFx.addEvent('complete', function(){ is_playing = false; });var is_playing = false;		
	}