expandable = function() {
	var expand = document.getElementsByClassName("expandable");
	if (expand) {
		for(i in expand) {

			var dt = expand[i].getElementsByTagName("dt");
			for(j in dt) {
				dt[j].onclick = function() {
					this.parentNode.className = this.parentNode.className?'':'active';
					return false;
				}
			}
		}
	}
}
var oldEvt = window.onload; window.onload = function() { if (oldEvt) oldEvt(); expandable(); }