var idra_rules = {
	'#openHeader' : function(element){
		element.onclick = function(){
			var targetDiv = $('sidebar_header');
			new Effect.BlindDown(targetDiv,{duration: 0.5});
			new Effect.Fade(this);
			Effect.Appear('closeHeader', {delay: 1});
		}
	},
	'#closeHeader' : function(element){
		element.onclick = function(){
			var targetDiv = $('sidebar_header');
			new Effect.BlindUp(targetDiv,{duration: 0.5});
			new Effect.Fade(this); 
			Effect.Appear('openHeader', {delay: 1});
		}
	}
};

Behaviour.register(idra_rules);