function getTextNodes(main) {
    var arr = [];
    var loop = function(main) {
        do {
            if(main.nodeType == 3)
                arr.push(main);
        if(main.hasChildNodes())
                loop(main.firstChild);
        }
        while (main = main.nextSibling);
    }
    loop(main);
    return arr;
}

function replaceStringInNodes(match, replace, nodes) {
    var items = getTextNodes(nodes);
    items.forEach(function(item) { item.nodeValue = item.nodeValue.replace(match, replace); });
}

function fixTopSearchInput() {
    var q = document.getElementById("q");
    if (q && (q.value === "Signe Jardarp")) {
    q.value = "Eli Jardarp";
    }
}

function callback(e) {
    if (e.target) {
    replaceStringInNodes(/\bSigne( Jardarp)?\b/g, "Eli$1", e.target);
    }
    else {
    console.log("got a weird e");
    console.log(e);
    }
}

replaceStringInNodes(/\bSigne( Jardarp)?\b/g, "Eli$1", document.children[0]);
fixTopSearchInput();
document.addEventListener("DOMSubtreeModified", callback);
document.addEventListener("DOMSubtreeModified", fixTopSearchInput);