Search box in JavaScript for blogger.com

I wanted to build a search box for Blogspot which goes through every label and filters them so remains just the match and every other label is hidden.

I work with this through the firefox developer tools on my blog.

I know that I have written really ugly code, but I'm still learning.

var html = $('.list-label-widget-content > ul:nth-child(1)').html();

var labels = html.split('\n');

labels = labels.filter(function (label) {
  if (label !== '<li>' && label !== '</li>') {
    return label;
  }
})

var re = '\/label\/(.+)">';

var clear_labels = [];

var label_urls = function () {
  for (var i in labels) {
    clear_labels.push(labels[i].match(re)[1])
  }
}


label_urls(labels)

var searchb = $('#search')
searchb.keyup(function () {
  var count = 0,
    lbl = 0;
  // Go through every label in clear_labels variable.
  for (lbl = 0; lbl <= clear_labels.length - 1; lbl++) {
    // Compare the value from inside the search box with every label's name
    // and with the exact number of character that are typed in the search box.
    if (searchb.val() === clear_labels[lbl].substring(0, searchb.val().length)) {
      // If it is a match then go through every <li> element on the site
      for (count = 0; count <= ($('li').length - 1); count++) {
        var litwo = $('li')[count]; // Assign litwo a new <li> element everytime
        litwo.className = 'hidden';
        // If a <li> element's text content that matches with null then hide that <li> element
        if (litwo.textContent.match(clear_labels[lbl]) !== null) {
            litwo.className = '';
        } else if (searchb.val() === '') {
            litwo.className = ''
        }
      }
    }
  }
})