var objLastDiv;

function switchSubNav(intDivId){
	var objCurrentDiv = document.getElementById('sub_'+intDivId);
	if(objLastDiv && objLastDiv != objCurrentDiv) {
		Effect.BlindUp(objLastDiv);
	}
	if(objCurrentDiv.style.display == 'none') {
		Effect.BlindDown(objCurrentDiv);
	} else {
		Effect.BlindUp(objLastDiv);
	}
	objLastDiv = objCurrentDiv;
}