var menuActivator = Class.create(
{
	initialize: function(selectboxId, trigger)
	{
		this.setObserver(selectboxId, trigger);
	},
	
	setObserver: function(id, trigger)
	{
		Event.observe(id, trigger, function(event)
		{
			if($(id).value != '')
			{
				this.setActiveUrl($(id).value);
			}
		}.bind(this));
	},
	
	setActiveUrl: function(url)
	{
		window.location = url;
	}
});

Event.observe(window, 'load', function()
{
	var catMenu = new menuActivator('sector', 'change');
	var articleMenu = new menuActivator('store', 'change');
});