tr タグと li タグを grep するグリモン。grepの元ネタは http://0xcc.net/blog/archives/000008.html (グリモンの皮を被せただけ)

table_grep.user.js

// ==UserScript==
// @name          table_grep
// @namespace     http://github.com/lolicsystem
// @description   table grep
// @include       *
// @author        lolicsystem
// @version       0.1
// ==/UserScript==

(function () {

    var target = document.getElementsByTagName('html');
    target[0].appendChild(keywordInput());

    function keywordInput() {
        var e = document.createElement('input');
        e.type = 'text';
        e.size = '20';
        e.style.position = 'fixed';
        e.style.top      = '3px';
        e.style.left     = '3px';
        e.style.zIndex   = '65535';
        e.addEventListener('keyup',
                           function () {
                               grep('tr', e.value);
                               grep('li', e.value);
                           }, true);
        return e;
    }

    var displaystyle;
    function grep (tag, pattern) {
        try {
            regex = new RegExp(pattern, "i");
            var row = document.getElementsByTagName(tag);
            for (i = 0; i < row.length; i++) {
                e = row[i];
                if(displaystyle == null){
                    displaystyle = e.style.display;
                }
                var str = e.innerText || e.innerHTML;
                if (str.match(regex)) {
                    e.style.display = displaystyle;
                } else {
                    e.style.display = "none";
                }
            }
        } catch (e) {
        }
    }

})();