function cg_toggle(class_toggled,caller){
	objs = document.getElementsByClassName(class_toggled);
	objs.each(function(obj){
		obj.style.display = (obj.style.display != 'block') ? 'block' : 'none';
	});
	caller.innerHTML = (caller.innerHTML != 'more...') ? 'more...' : 'less...';
}