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 open_window_fs(url, win_width, win_height, pos_left, pos_top)
{
        var h = win_height;
	newWindow = window.open(url,"ins","width="+(screen.width - 10)+",height="+
	(screen.availHeight - 30) +",left=0,top=0,scrollbars=yes resizable=yes");
	newWindow.focus();
}

function close_window()
{
  window.close();
  return true;
}