--- cite.js.orig	2009-03-20 21:36:53.000000000 +0900
+++ cite.js	2009-09-08 07:09:26.000000000 +0900
@@ -2013,6 +2013,7 @@
 		"ISBN" : "ISBN",
 		"call-number":"callNumber",
 		"note":"extra",
+		"extra-date":"extraDate",
 		"number":"number",
 		"references":"history"
 	},
@@ -2052,7 +2053,23 @@
 	}
 	
 	for each(var zoteroField in zoteroFields) {
-		var value = this.zoteroItem.getField(zoteroField, false, true).toString();
+		if (zoteroField == "extraDate"){
+			var value = this.zoteroItem.getField("extra", false, true).toString();
+			var m = value.match(/^\[([0-9]+)\].*/);
+			if (m){
+				value = m[1];
+			} else {
+			    value = "";
+                        }
+		} else if (zoteroField == "extra") {
+			var value = this.zoteroItem.getField(zoteroField, false, true).toString();
+			var m = value.match(/^\[[0-9]+\]\s+(.*)/);
+			if (m){
+				value = m[1];
+			}
+		} else {
+			var value = this.zoteroItem.getField(zoteroField, false, true).toString();
+		}
 		if(value != "") {
 			// Strip enclosing quotes
 			if(value.match(Zotero.CSL._quotedRegexp)) {