function fnSetDefault(idNav){
	top.idDefaultNav = idNav;
	top.oDefaultNav = document.getElementById(idNav);
	dropdown(idNav);
}

function dropoff(){
	top.oNavTimeout = setTimeout('dropdown(top.idDefaultNav);',0);
}

function dropdown(idNav) {
	if (top.oActiveNav) {
		top.oActiveNav.style.color = (top.oActiveNav == top.oDefaultNav) ? '#060' : '#223399';
		top.oActiveNav.style.backgroundColor = '#ebebeb';
		top.oActiveSubNav.style.visibility = 'hidden';
	}
	
	if (top.oNavTimeout) {clearTimeout(top.oNavTimeout);}
			
	oNav = document.getElementById(idNav);
	oSubNav = document.getElementById(idNav+'_subnav');
	
	oNav.style.color = (oNav == top.oDefaultNav) ? '#9c9' : '#fff';
	oNav.style.backgroundColor = '#3c4ca5';
	oSubNav.style.visibility = 'visible';
	
	top.oActiveNav = oNav;
	top.oActiveSubNav = oSubNav;
}