1 files changed, 40 insertions, 0 deletions
diff --git a/skins/common/htmlform.js b/skins/common/htmlform.js
new file mode 100644
index 00000000..2045ab48
--- /dev/null
+++ b/skins/common/htmlform.js
@@ -0,0 +1,40 @@
+// Find select-or-other fields.
+addOnloadHook( function() {
+	var fields = getElementsByClassName( document, 'select', 'mw-htmlform-select-or-other' );
+
+	for( var i = 0; i < fields.length; i++ ) {
+		var select = fields[i];
+
+		addHandler( select, 'change', htmlforms.selectOrOtherSelectChanged );
+
+		// Use a fake 'e' to update it.
+		htmlforms.selectOrOtherSelectChanged( { 'target': select } );
+	}
+} );
+
+var htmlforms = {
+	'selectOrOtherSelectChanged' : function( e ) {
+		var select;
+		if ( !e ) {
+			e = window.event;
+		}
+		if ( e.target ) {
+			select = e.target;
+		} else if ( e.srcElement ) {
+			select = e.srcElement;
+		}
+		if ( select.nodeType == 3 ) { // defeat Safari bug
+			select = select.parentNode;
+		}
+
+		var id = select.id;
+		var textbox = document.getElementById( id + '-other' );
+
+		if ( select.value == 'other' ) {
+			textbox.disabled = false;
+		} else {
+			textbox.disabled = true;
+		}
+	}
+}
+