//expand nav
function toggleView(objectID) {
	var object = document.getElementById(objectID)
	var I = document.getElementById("img" + objectID)
	var Ipath = I.src
	if (object.style.display == 'block') {
		object.style.display = 'none';
		I.src = 'images/img_page/btn_expand.gif'
		return;
		}
	else {
		object.style.display='block';
		I.src = 'images/img_page/btn_contract.gif'
		return;
	}
}