var overlayDuration = 0.2;
var overlayOpacity = 0.95;

function opsirnije(id_artikla, naziv)
{                                                      
    $('opsirnije_naslov').innerHTML = decodeURI(naziv);            
    $('opsirnije_content').innerHTML = "";
    new Effect.Appear('opsirnije', { duration: overlayDuration, from: 0.0, to: overlayOpacity });
    new Ajax.Updater('opsirnije_content', '/webshop/ajax.php?f=opsirnije', {
        method: 'post',
        onLoading: function() { /*$('loading').show(); */},
        parameters: {
            id: id_artikla
        },
        onComplete: function() {   
        }}); 
}
function close_opsirnije()
{
    new Effect.Fade('opsirnije', { duration: overlayDuration, from: overlayOpacity, to: 0.0 });
}