function open_window(url, win_width, win_height, pos_left, pos_top)

{

        var h = win_height;

	newWindow = window.open(url,"ins","width="+win_width+",height="+

	h+",left="+pos_left+",top="+pos_top+",scrollbars=yes,resizable=yes");

	newWindow.focus();

}



function close_window()

{

  window.close();

  return true;

}