document.write('<div id="fader" style="display:none;" onclick="onFaderClick();"></div>');

function showFader(w, h)
{
 document.getElementById('fader').style.cssText = 'position:absolute; top:0; z-index:25;';
 document.getElementById('fader').style.left = (w == 0 ? '' : '-' + Math.ceil((document.documentElement.scrollWidth - w) / 2)) + 'px';
 document.getElementById('fader').style.width = document.documentElement.scrollWidth + 'px';
 document.getElementById('fader').style.height = document.documentElement.scrollHeight + 'px';

 document.getElementById('fader').style.display = '';
}

function hideFader()
{
 document.getElementById('fader').style.display = 'none';
}