DOM 2 methods
Open the DOM 2 spec http://www.w3.org/TR/DOM-Level-2-HTML/html.html then paste this JS in the console.
by John Schulz
JavaScript
var script = document.createElement('script');
script.src = 'http://code.jquery.com/jquery-latest.min.js';
script.onload = function(e)
{
var $section = jQuery('.div3:has(#ID-798055546)');
$section.siblings().remove();
$section.parent().siblings().remove();
$section.parents('.div1').siblings().remove();
$section
.children('dl')
.find('dt, dd').hide()
.find('dt:contains(Methods)').each(function(i, el) {
jQuery(el)
.next('dd').show()
.find('dt, dd').show()
.parents('dd').show()
.prev('dt').show()
});
};
document.body.appendChild(script);