var Site = {
    start: function(){
	if ($('all')) Site.parsemenus();
    },
    parsemenus: function(){

	$('menu_personbase').addEvent('click', function(e){
		$('personbase_bt').setProperties({src: '../Image/alternates_a.gif'});
		$('workbase_bt').setProperties({src: '../Image/alternates_b_cl.gif'});

	    $('personbase').setStyle('display', 'block');
	    $('workbase').setStyle('display', 'none');

	    e.stop();
	});
	$('menu_workbase').addEvent('click', function(e){
		$('personbase_bt').setProperties({src: '../Image/alternates_a_cl.gif'});
		$('workbase_bt').setProperties({src: '../Image/alternates_b.gif'});

	    $('personbase').setStyle('display', 'none');
	    $('workbase').setStyle('display', 'block');

	    e.stop();
	});

    }
};
window.addEvent('load', Site.start);