if(document.images) 
{
	var selected_item = "";

	var navbar_campaigns_unselected = new Image();
	var navbar_home_unselected = new Image();	
	var navbar_iconsandavatars_unselected = new Image();
	var navbar_logs_unselected = new Image();
	var navbar_lookandfeel_unselected = new Image();
	var navbar_rooms_unselected = new Image();
	var navbar_settings_unselected = new Image();
	var navbar_users_unselected = new Image();
	var navbar_campaigns_hover = new Image();
	var navbar_home_hover = new Image();	
	var navbar_iconsandavatars_hover = new Image();
	var navbar_logs_hover = new Image();
	var navbar_lookandfeel_hover = new Image();
	var navbar_rooms_hover = new Image();
	var navbar_settings_hover = new Image();
	var navbar_users_hover = new Image();

	var navbar_selected = new Image();

	navbar_campaigns_unselected.src = "content/images/navbar/unselected/campaigns.jpg";
	navbar_home_unselected.src = "content/images/navbar/unselected/home.jpg";
	navbar_iconsandavatars_unselected.src = "content/images/navbar/unselected/iconsandavatars.jpg";
	navbar_logs_unselected.src = "content/images/navbar/unselected/logs.jpg";
	navbar_lookandfeel_unselected.src = "content/images/navbar/unselected/lookandfeel.jpg";
	navbar_rooms_unselected.src = "content/images/navbar/unselected/rooms.jpg";
	navbar_settings_unselected.src = "content/images/navbar/unselected/settings.jpg";
	navbar_users_unselected.src = "content/images/navbar/unselected/users.jpg";

	navbar_campaigns_hover.src = "content/images/navbar/hover/campaigns.jpg";
	navbar_home_hover.src = "content/images/navbar/hover/home.jpg";
	navbar_iconsandavatars_hover.src = "content/images/navbar/hover/iconsandavatars.jpg";
	navbar_logs_hover.src = "content/images/navbar/hover/logs.jpg";
	navbar_lookandfeel_hover.src = "content/images/navbar/hover/lookandfeel.jpg";
	navbar_rooms_hover.src = "content/images/navbar/hover/rooms.jpg";
	navbar_settings_hover.src = "content/images/navbar/hover/settings.jpg";
	navbar_users_hover.src = "content/images/navbar/hover/users.jpg";
}

function initMenu()
{
	navbar_selected.src = "content/images/navbar/selected/" + selected_item + ".jpg";
	document.images[selected_item].src = navbar_selected.src;
}

function activateMenuItem(imageName)
{
	if(document.images)
	{
	   if(selected_item != imageName)      
   	      document.images[imageName].src = eval("navbar_" + imageName + "_hover.src");
	}
}

function deactivateMenuItem(imageName)
{
	if(document.images)
	{
	  if(selected_item != imageName)
		document.images[imageName].src = eval("navbar_" + imageName + "_unselected.src");     
	}
}

function activateSubMenuItem(itemName)
{    
   submenuActive = true;
   if(itemName != selectedSubMenuItem)
      document.getElementById(selectedSubMenuItem).className = "subnav_item";  
   var id = document.getElementById(itemName);
   id.className = "subnav_selected_item";   
}

function deactivateSubMenuItem(itemName)
{   
   submenuActive = false;
   var id = document.getElementById(itemName);
   id.className = "subnav_item";
   timerID = setTimeout('if(!submenuActive) document.getElementById(selectedSubMenuItem).className="subnav_selected_item"', 1);
}