function displayFilterMenu(subMenu) {
		if( document.getElementById(eval ("'" + subMenu + "_Container'")).innerHTML != '') {
			listElement = document.getElementById(eval("'" + subMenu + "_Container'"));
			listElement.style.display = "";
						
			closingFilters = false;
		}	
	}

	closingFilters = false;
	timFC = null;
	openFilters = null;
	
	function showFilterMenu(filterMenu) {
		if (document.getElementById(eval("'" + filterMenu + "_Container'")) != null) {
			if ( (document.getElementById(eval("'" + filterMenu + "_Container'")).style.display == "")  ) {
				clearTimeout(timFC);
			} 
			openFilters = window.setTimeout("displayFilterMenu ('" + filterMenu + "')", 300);
		}
	}
	
	function hideFilterMenu(subMenu) {
		document.getElementById(subMenu + "_Container").style.display = "none";
	}
	
	function leaveFilterMenu(subMenu) {
		if (document.getElementById(eval("'" + subMenu + "_Container'")) != null) {
		if ( document.getElementById(eval("'" + subMenu + "_Container'")).style.display == "") {
			timFC = window.setTimeout("hideFilterMenu('" + subMenu + "')", 400);
			closingFilters = true;
		}	
			if ( openFilters ) {
			clearTimeout(openFilters);
		}
		}
	}
	
	function rolloverMenu(button)
	{
		if (document.images) {
			document.images['menu' + button].src = eval('menu' + button + 'Ovr').src;
		}
		showFilterMenu(button);
	}
	
	function rolloutMenu(button)
	{
		if (document.images) {
			document.images['menu' + button].src = eval('menu' + button).src;
		}
		leaveFilterMenu(button);		
	}	
	
	function rolloverSubMenu(button)
	{
		if (document.images) {
			document.images['menu' + button].src = eval('menu' + button + 'Ovr').src;
		}
	}
	
	function rolloutSubMenu(button)
	{
		if (document.images) {
			document.images['menu' + button].src = eval('menu' + button).src;
		}		
	}
	
	var menuOverview = new Image();
	menuOverview.src = "images/menu/overview-btn.gif";	
	var menuOverviewOvr = new Image(); 
	menuOverviewOvr.src = "images/menu/overview-ovr.gif";
	
	var menuProductivity = new Image();
	menuProductivity.src = "images/menu/productivity-btn.gif";	
	var menuProductivityOvr = new Image(); 
	menuProductivityOvr.src = "images/menu/productivity-ovr.gif";
	
	var menuVisualisation = new Image();
	menuVisualisation.src = "images/menu/visualisation-btn.gif";	
	var menuVisualisationOvr = new Image(); 
	menuVisualisationOvr.src = "images/menu/visualisation-ovr.gif";
	
	var menuSecurity = new Image();
	menuSecurity.src = "images/menu/security-btn.gif";	
	var menuSecurityOvr = new Image(); 
	menuSecurityOvr.src = "images/menu/security-ovr.gif";
	
	var menuSwitching = new Image();
	menuSwitching.src = "images/menu/switching-btn.gif";	
	var menuSwitchingOvr = new Image(); 
	menuSwitchingOvr.src = "images/menu/switching-ovr.gif";
	
var menuaccount = new Image();
menuaccount.src = "images/menu/btnAccount.gif";
var menuaccountOvr = new Image(); menuaccountOvr.src = "images/menu/btnAccount_ovr.jpg";
var menuregister = new Image();
menuregister.src = "images/menu/btnRegister.gif";
var menuregisterOvr = new Image(); menuregisterOvr.src = "images/menu/btnRegister_ovr.jpg";