function showPictures(URL) {
var slideshow_width = 642;
var slideshow_height = 600;
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width='+slideshow_width+',height='+slideshow_height+'');");
}