$(document).ready(function() {
	
	$('#slideshow-images')
		.after('<a class="images-prev" id="image-overlay-prev" href="#">&nbsp;</a><a class="images-next" id="image-overlay-next" href="#">&nbsp;</a>')
		.cycle ({ 
    		fx:     'fade', 
    		speed:  1000, 
    		timeout: 4200,  
			next: '.images-next',
			prev: '.images-prev',
			nowrap: 0,
			after: onAfter
		});
});

function onAfter(curr, next, opts) {
    var index = $(this).parent().children().index(this);
    $('.images-prev')[index == 0 ? 'hide' : 'show']();
    $('.images-next')[index == opts.slideCount - 1 ? 'hide' : 'show']();
}

function popup(URL) {
w = window.open(URL, "", "toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=900,height=650");
}