window.addEvent('domready', function() {
	
	$$('form').setProperty('autocomplete', 'off');
		
	var fx = new Fx.Transition(Fx.Transitions.Bounce.easeOut);
		
	var categories = new Fx.Style($('categories'), 'height', {
		duration: 900, 
		transition: fx.easeIn
	});

	$('extend').addEvent('click', function(event) {
		event = new Event(event).stop();	
		
		var item_h = 35;
		var height = $('categories').getStyle('height');
		
		if(height == item_h + 'px') {
			
			var newheight = ($('categories').getChildren().length - 1) / 5 * item_h;
			
			categories.start(newheight);
			
			$$('#extend a').setStyle('background-position', 'center 0px');
			
		} else {
			
			categories.start(item_h);
			$$('#extend a').setStyle('background-position', 'center -21px');	
		}
	});
	
	window.addEvent('keypress', function(e) {
		if(e.key == 'enter')
		{
			e.stop();   
		}
	});
});