function showSubmenu(divID) {
    submenus = document.getElementById('medium_menu').getElementsByTagName('ul');
    for (var i = submenus.length - 1; i >= 0; i--){
	    submenus[i].style.display = 'none';
    };
    divID.style.display = 'block'; 
} 

function setStatusMainItem(itemID) {
    items = document.getElementById('medium_menu').getElementsByTagName('a');
    var rpItem = new RegExp("^item")
    for (var i = items.length - 1; i >= 0; i--){
        if (rpItem.test(items[i].id)) { 
            items[i].className = 'item_nonactive';
            if (itemID) {
                if(itemID.className == 'item_nonactive'){      
                    itemID.className = 'item_active';          
                }  
            }
        };
    };
}

function setStatusSubmenuItem(subID) {
    if (subID) {
        if(subID.className == 'subitem_nonactive'){      
            subID.className = 'subitem_active';          
        } else {
            subID.className = 'subitem_nonactive';
        }       
    }
}

function set_visible(myvar){
    if(myvar){
        visible = 1;
    } else {
        visible = 0;
    }
}

function hideSubmenu(divID, itemID){
   if(visible == 0 || visible == ''){
          if (itemID) {
            itemID.className = 'item_nonactive';
          }
  		  if(divID) {
            if(divID.style.display == 'block'){ 
                divID.style.display = 'none';   
            }
        }
   }	
}