function ShowHide(id) {
obj = document.getElementsByTagName("div");
if (obj[id].style.visibility == 'visible'){
	obj[id].style.visibility = 'hidden';
	obj[id].style.height = '0px';
	}
	else {
	obj[id].style.visibility = 'visible';
	obj[id].style.height = 'auto';
	}
}