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@@ -205,20 +205,20 @@ function Taboo() {
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       return;
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     }
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+    // lazy load tabs if more exist
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     if (newIdx >= quickShowTabs.length) {
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       if (quickShowEnum.hasMoreElements()) {
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         addRow();
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       }
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-      else {
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-        return;
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-      }
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     }
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+    // unhighlight the current selected tab
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     quickShowTabs[quickShowIdx].removeAttribute('class');
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     if (newIdx >= quickShowTabs.length) {
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-      newIdx = quickShowTabs.length -1;
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+      newIdx = quickShowTabs.length - 1;
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     }
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+
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     quickShowIdx = newIdx;
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     quickShowTabs[quickShowIdx].setAttribute('class', 'current');
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@@ -227,12 +227,13 @@ function Taboo() {
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     }
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     var topIdx = quickShowIdx - (displayRows * displayCols);
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-
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+    topIdx = topIdx - (Math.abs(topIdx) % displayCols);
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     if (visible(topIdx)) {
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       setVisibleFor(topIdx, false);
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     }
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     var bottomIdx = quickShowIdx + (displayRows * displayCols);
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+    bottomIdx = bottomIdx - (Math.abs(bottomIdx) % displayCols);
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     if (visible(bottomIdx)) {
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       setVisibleFor(bottomIdx, false);
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     }