var last_expanded = ''; 
 var last_clicked = '';

 function showHide(id,linkname,openid,openlink) 
 { 
 var obj = document.getElementById(id);
 var clicked = document.getElementById(linkname);
 var openmenu = document.getElementById(openid);
 var opentitle = document.getElementById(openlink);

 var status = obj.className; 

 if (status == 'hide') { 

 if (last_expanded != '') { 
 var last_obj = document.getElementById(last_expanded);
 var last_clicked = document.getElementById(last_link);
 last_obj.className = 'hide'; 
 last_clicked.className = 'mainmenu';
 }
 

 obj.className = 'show'; 
 clicked.className = 'menuopen';
 
 openmenu.className = 'hide';
 opentitle.className = 'mainmenu';

 last_expanded = id;
 last_link = linkname;


 } else { 
 obj.className = 'hide'; 
 clicked.className = 'mainmenu'; 
 
 } 
 }