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Check for deleted menus or something. It fixes a JS error. props koopersmith, see #13215.
git-svn-id: http://svn.automattic.com/wordpress/trunk@14394 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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@ -409,9 +409,10 @@ var WPNavMenuHandler = function ($) {
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$.fn.extend({
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makeTabVisible : function() {
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var t = this.eq(0),
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left = t.offset().left,
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right = left + t.outerWidth();
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var t = this.eq(0), left, right;
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if( ! t.length ) return;
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left = t.offset().left;
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right = left + t.outerWidth();
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if( right > fixedRight )
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fluid.animate({ 'margin-left' : "+=" + (fixedRight - right) + 'px', }, 'fast');
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else if ( left < fixedLeft )
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