eec_last = false;

function ec(eec_id) {
//	if(eec_last) eec_last.className="hidden";

	eec = document.getElementById('eec'+eec_id);
	if(eec.className!="hidden")
		eec.className="hidden";
	else
		eec.className="";

	eec_last = eec;
}

function enableSubmit(what,which) {
	which = document.getElementById(which);
	if (what.checked == true) {
		which.className = "";
		which.disabled  = false;
	} else {
		which.className = "disabled";
		which.disabled  = "disabled";
	}
}