function popup(URL, WIDTH, HEIGHT, LEFT, TOP, TOOLBAR, SCROLLBARS, LOCATION, STATUSBAR, MENUBAR, RESIZABLE, DIRECTORIES) {
newwindow = window.open(URL,
                       "viewwin",
		       "width="+WIDTH+
		       ",height="+HEIGHT+
		       ",left="+LEFT+
		       ",top="+TOP+
		       ",toolbar="+TOOLBAR+
		       ",scrollbars="+SCROLLBARS+
		       ",location="+LOCATION+
		       ",statusbar="+STATUSBAR+
		       ",menubar="+MENUBAR+
		       ",resizable="+RESIZABLE+
		       ",directories="+DIRECTORIES);
}