//=======================================================================================================
//-------------------------------------------------------------------------------------------------------
//	Custom Javascript functions
//-------------------------------------------------------------------------------------------------------
//=======================================================================================================
//
var menu_collapsed = true;

function toggleSubMenu( elem_id )
{
	// Get id of submenu
	var new_id = elem_id.replace(/^l-/, 'sub-');

	var submenu = document.getElementById( new_id );

	// Toggle sub menu
	if(submenu)
	{
		submenu.style.display = (submenu.style.display == 'block') ? 'none' : 'block';
	}
}

function toggleAllMenu( menucontrol )
{
	var display_mode = menu_collapsed ? 'block' : 'none';
	menu_collapsed = menu_collapsed ? false : true;

	var main_menu = document.getElementById('sidenav');
	var submenus = main_menu.getElementsByTagName('ul');

	for(var i = 0; i < submenus.length; i++)
	{
		submenus[i].style.display = display_mode;
	}

	menucontrol.innerHTML 		= menu_collapsed ? 'Expand All' : 'Collapse All';
	menucontrol.style.backgroundImage = menu_collapsed ? 'url(/images/arrow_down.gif)' : 'url(/images/arrow_up.gif)';
}