$(document).ready(function(){
    $('#menu a').each(function(idx, el){
        $(this).mouseover(function(){
            // Change the background
            var bkg = $('#header-bkg');
            bkg.removeAttr('class');
            bkg.addClass('bkg-' + idx);
            
            // Change the textblock
            var block = $('#tekst-' + idx);
            
            $('div.info-text', block.parent()).each(function(){
                $(this).hide();
            });
            
            block.show();
        });
        
        $(this).mouseout(function(){
            var bkg = $('#header-bkg');
            bkg.removeAttr('class');
            bkg.addClass('bkg-default');
        });
    });
});