Vladimir Prelovac

The Yahoo! Exceptional Performance team recommends <a href="http://developer.yahoo.com/performance/rules.html#js_bottom" rel="nofollow ugc">placing scripts at the bottom of your page</a> because of the way browsers download components.
“The problem caused by scripts is that they block parallel downloads. The HTTP/1.1 specification suggests that browsers download no more than two components in parallel per hostname. If you serve your images from multiple hostnames, you can get more than two downloads to occur in parallel. While a script is downloading, however, the browser won’t start any other downloads, even on different hostnames.
In some situations it’s not easy to move scripts to the bottom. If, for example, the script uses document.write to insert part of the page’s content, it can’t be moved lower in the page. There might also be scoping issues. In many cases, there are ways to workaround these situations.”
WordPress default behavior is to load javascript in the page.
This plugin will move all javascript code to the footer if the plugins have <a href="http://www.prelovac.com/vladimir/best-practice-for-adding-javascript-code-to-wordpress-plugin" rel="nofollow ugc">declared javascript properly</a>.
Plugin by <a href="http://www.prelovac.com/vladimir" rel="nofollow ugc">Vladimir Prelovac</a>. Looking for <a href="http://www.prelovac.com/vladimir/services" rel="nofollow ugc">WordPress Services</a>?
<h3>License</h3>
This file is part of Footer JavaScript.
Footer JavaScript is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
Footer JavaScript is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with Footer JavaScript. If not, see <a href="http://www.gnu.org/licenses/" rel="nofollow ugc">http://www.gnu.org/licenses/</a>.

JavaScript to Footer

I used and face some of bad experience with it 

Can't give perfect result

This plugin automatically moves JavaScript code to page footer, speeding up page loading time.

Joost de Valk

Easily add breadcrumbs to your template. If you’re using one of the supported WordPress frameworks, it’s as easy as enabling the plugin and checking the “Try to add automatically box”, if you’re not using one of those, adding it is as simple as adding one line of code to your template!
<h4>Supported Frameworks</h4>
Currently the breadcrumbs plugin supports the following frameworks:
<ul>
<li>Thematic</li>
<li>Hybrid</li>
<li>Thesis</li>
<li>WP Framework</li>
</ul>
More info:
<ul>
<li><a href="http://yoast.com/wordpress/breadcrumbs/" rel="nofollow ugc">Yoast Breadcrumbs</a>.</li>
<li>Read more about how to improve your <a href="http://yoast.com/articles/wordpress-seo/" rel="nofollow ugc">WordPress SEO</a>, so you can get the most out of this plugin.</li>
<li>Check out the other <a href="http://yoast.com/wordpress/" rel="nofollow ugc">WordPress plugins</a> by the same author.</li>
</ul>

JavaScript to Footer vs Yoast Breadcrumbs