判断条件修正
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@ -191,16 +191,8 @@ $(function() {
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'use strict';
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$.fn.toTop = function(opt) {
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var elem = this;
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var win = $(window);
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var doc = $('html, body');
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if(typeof(opt) != "undefined"){
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if(opt.win != null){
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win = opt.win;
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}
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if(opt.doc != null){
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doc = opt.doc;
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}
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}
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var win = (opt && opt.hasOwnProperty('win')) ? opt.win : $(window);
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var doc = (opt && opt.hasOwnProperty('doc')) ? opt.doc : $('html, body');
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var options = $.extend({
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autohide: true,
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offset: 50,
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