fixes bug #20708, where tables containing colspans greater than 1 are still sortable...

diff --git a/skins/common/wikibits.js b/skins/common/wikibits.js
index 9887ef4..06bbff3 100644 (file)
--- a/skins/common/wikibits.js
+++ b/skins/common/wikibits.js
@@ -695,6 +695,9 @@ function ts_resortTable(lnk) {
                var row = table.rows[j];
                if((" "+row.className+" ").indexOf(" unsortable ") < 0) {
                        var keyText = ts_getInnerText(row.cells[column]);
+                       if(keyText == undefined) {
+                               keyText = ""; 
+                       }
                        var oldIndex = (reverse ? -j : j);
                        var preprocessed = preprocessor( keyText.replace(/^[\s\xa0]+/, "").replace(/[\s\xa0]+$/, "") );