in assets/javascripts/search.js [105:115]
function tagsAtGuide(element) {
var tags = new Array();
for (var y = 0; y < element.childNodes.length; y++) {
if (element.childNodes[y].className == "tag") {
var tag = element.childNodes[y];
tags.push(tag.textContent);
}
}
return tags;
}