document.write ('<img border="0" width="166" height="33" src="menu/stroyteh_one.jpg"/></A>');
document.write ('<div class="sub" id="five" style="display: none">');
document.write ('<table border="0" cellpadding="0" cellspacing="2">');
document.write ('<tr><td ><a href="http://www.gkbst.ru/sub_stena.php"><img width="162" height="33" border="0" src="menu/sub_stena.jpg"/></a></td></tr>');
document.write ('<tr><td ><a href="http://www.gkbst.ru/sub_krovla.php"><img width="162" height="33" border="0" src="menu/sub_krovla.jpg"/></a></td></tr>');
document.write ('</table>');
document.write ('</div>');


function show_hide(obj) {

  if (document.getElementById(obj).style.display == 'none') 
	   document.getElementById(obj).style.display = 'block';
  else document.getElementById(obj).style.display = 'none';

 }