menu_status = new Array();

function showHide(theid){
    if (document.getElementById) {
    var switch_id = document.getElementById(theid);

        if(menu_status[theid] != 'show') {
           switch_id.className = 'show';
           menu_status[theid] = 'show';
        }else{
           switch_id.className = 'hide';
           menu_status[theid] = 'hide';
        }
    }
}

var last_expanded = ''; 

function showHide(id) 
{ 
var obj = document.getElementById(id); 

var status = obj.className; 

if (status == 'hide') { 

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

obj.className = 'show'; 

last_expanded = id; 
} else { 
obj.className = 'hide'; 
} 
}