起動時にエラーになる可能性があった
git-svn-id: http://www.cozmixng.org/repos/piro/treestyletab/trunk@6584 599a83e7-65a4-db11-8015-0010dcdd6dc2
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@ -461,7 +461,7 @@ TreeStyleTabBrowser.prototype = {
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)
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);
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if (b.tabContainer.tabbrowser == b) { // Firefox 3.7-
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if (b.tabContainer.tabbrowser == b && '_handleKeyEvent' in b) { // Firefox 3.7-
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eval('b._handleKeyEvent = '+
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b._handleKeyEvent.toSource().replace(
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'this.moveTabOver(aEvent);',
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