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(function($) {
$(document).ready(function(){
// putting lines by the pre blocks
$("pre").each(function(){
var pre = $(this).text().split("\n");
var lines = new Array(pre.length+1);
for(var i = 0; i < pre.length; i++) {
var wrap = Math.floor(pre[i].split("").length / 70)
if (pre[i]==""&&i==pre.length-1) {
lines.splice(i, 1);
} else {
lines[i] = i+1;
for(var j = 0; j < wrap; j++) {
lines[i] += "\n";
}
}
}
$(this).before("<pre class='lines'>" + lines.join("\n") + "</pre>");
});
var headings = [];
var collectHeaders = function(){
headings.push({"top":$(this).offset().top - 15,"text":$(this).text()});
}
if($(".markdown-body h1").length > 1) $(".markdown-body h1").each(collectHeaders)
else if($(".markdown-body h2").length > 1) $(".markdown-body h2").each(collectHeaders)
else if($(".markdown-body h3").length > 1) $(".markdown-body h3").each(collectHeaders)
$(window).scroll(function(){
if(headings.length==0) return true;
var scrolltop = $(window).scrollTop() || 0;
if(headings[0] && scrolltop < headings[0].top) {
$(".current-section").css({"opacity":0,"visibility":"hidden"});
return false;
}
$(".current-section").css({"opacity":1,"visibility":"visible"});
for(var i in headings) {
if(scrolltop >= headings[i].top) {
$(".current-section .name").text(headings[i].text);
}
}
});
$(".current-section a").click(function(){
$(window).scrollTop(0);
return false;
})
});
})(jQuery)
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