window.addEvent('domready', function() {

$('slideshow').addEvent('click', function(event){
    event.stop(); 
    $('overlayMask').setStyle('display', 'block');
});

$('slideshow').addEvent('click', function(event){
    event.stop(); 
    $('posMask').setStyle('display', 'block');
});

$('slideshow_close').addEvent('click', function(event){
    event.stop(); 
    $('posMask').setStyle('display', 'none');
});

$('overlayMask').addEvent('click', function(event){
    event.stop();  
    $('posMask').setStyle('display', 'none');
});

$('slideshow_close').addEvent('click', function(event){
    event.stop();  
    $('overlayMask').setStyle('display', 'none');
});

$('overlayMask').addEvent('click', function(event){
    event.stop();  
    $('overlayMask').setStyle('display', 'none');
});




});