var choosed_slider = 1;

function runSlider()
{
    setInterval(function()
    {
        if(choosed_slider > 0){
            
        var selects = $$('.slider_select div');
        selects.each(function(select) 
        {
            if(select.hasClassName('slider_select_active')){
                select.removeClassName('slider_select_active');
                select.addClassName('slider_select_not_active');
            }
        });    
        
        var imgs = $$('.content_left img');
        imgs.each(function(img) 
        {
            if(img.visible()){
                var nr = parseInt(img.readAttribute('nr'));
                var nr_next = nr + 1;
                if(nr_next == 4) {nr_next = 1} //alert(nr);
                img.fade({ duration: .9 });
                $('realisation'+nr_next).appear({ duration: .9});
                $('slider_select_'+nr).removeClassName('slider_select_active');
                $('slider_select_'+nr).addClassName('slider_select_not_active');
                $('slider_select_'+nr_next).removeClassName('slider_select_not_active');
                $('slider_select_'+nr_next).addClassName('slider_select_active');
            }
        });
        }
        else{
            choosed_slider ++;
        }
    }, 7000);
}

function set_slider(nr){
    if(nr && nr!=undefined){
        choosed_slider = -1;
        bool_appear = true;
        
        var selects = $$('.slider_select div');
        selects.each(function(select) 
        {
            var select_nr = parseInt(select.readAttribute('nr'));
            
            if(select_nr == nr){
                select.removeClassName('slider_select_not_active');
                select.addClassName('slider_select_active');
            }
            else{
                select.removeClassName('slider_select_active');
                select.addClassName('slider_select_not_active');
            }
        });

        var imgs = $$('.content_left img');
        imgs.each(function(img) 
        {
            var img_nr = parseInt(img.readAttribute('nr'));
            if(img_nr == nr && img.visible()){
                bool_appear = false;
            }else{
                img.fade({ duration: 0 });
            }
        });
        if(bool_appear){
           $('realisation'+nr).appear({ duration: .9}); 
        }
        
    }
}