//章节目录比浮动按钮+59}elseif(scrolltop>(lefttop)){jquery("#uidirectorybutton").css({"position":"absolute","top":lefttop+"px",bottom:"auto"});jquery("#uidirectorpanel").css({"position":"absolute","top":lefttop+59+"px",bottom:"auto"});}else{jquery("#uidirectorybutton").css({"position":"absolute","top":readtop});jquery("#uidirectorpanel
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