document.addEvent('domready', function() {
    div = new Element('div', { 'style': 'position:absolute; top:0px; left:0px; z-index:100; width:100%; height:'+window.getScrollSize().y+'px; background:#000;'} );
    var top = 0;
    if(window.getSize().y>522) {
        top = (window.getSize().y-522)/2;
    }
    divimg = new Element('div', { 'style': 'position:absolute; top:'+top+'px; left:'+(window.getSize().x-873)/2+'px; z-index:110; width:873px;'} );
    div.set('opacity','.5');
    divimg.innerHTML = '<a href="/szkola-pod-zaglami,1/zapraszamy-na-rejsy,1/"><img src="img/ban_18spz.jpg" /></a><br/><a href="/zamknij" onclick="return closeBan(this.href)" style="float:right">zamknij</a>';
    $('spz').adopt(div);
    $('spz1').adopt(divimg);
});

function closeBan(href) {
    $('spz').destroy();
    $('spz1').destroy();
    return false;
}