Element.extend({
	within: function(p){
		var parenttest = this;
		while(parenttest.parentNode != null){
			if(parenttest == p){
				return true;
			}
			parenttest = parenttest.parentNode;
		}
		return false;
	},
	
	toggle: function(){
		if(this.style.display == 'none'){
			this.setStyles({'display':'block'});
		}else{
			this.setStyles({'display':'none'});
		}		
	},
	
	hide: function(){
		this.setStyles({'display':'none'});
	},
	
	show: function(){
		this.setStyles({'display':'block'});
	}
})