function setup_dts() {
	var terms = $$("dt");
	for(var i = 0; i < terms.length; i++) {
		terms[i].observe('click', function(event){ 
			var element = Event.element(event);
			while(element = element.nextSibling) {
				if(element.tagName == "DD") {
					element.toggleClassName("show");
					break;
				}
			}
		});		
	}
}