function popUp(URL,w,h,l,t,menus) {
day = new Date();
id = day.getTime();
w_txt = (!w?"400":",width = " + w);
h_txt = (!h?"400":",height = " + h);
l_txt = (!l?"":",left = " + l);
t_txt = (!t?"":",top = " + t);

comm_txt = "page" + id + " = window.open(URL, '" + id + "','toolbar=" + menus + ",location=" + menus + ",directories=" + menus + ",status=" + menus + ",menubar=" + menus + ",scrollbars=" + menus + ",resizable=" + menus + w_txt + h_txt + l_txt + t_txt + "');";

eval(comm_txt);
}