Forward to link or selection

(function(){
var sel = window.getSelection().toString();
if (sel != "") {
    window.open("https://www.google.com/search?q="+sel, '_blank');
    return;
}
// Search through elements in document order
var links = [].concat(
        Array.prototype.slice.call(document.getElementsByTagName("LINK")),
        Array.prototype.slice.call(document.getElementsByTagName("A"))
        );

// Determine the destinations of the rels we care about
for(var i in links){
    if(!links[i].rel || !links[i].href) continue;
    if(links[i].rel.toLowerCase() == "next"){
        if(links[i].tagName == "A"){
            links[i].click();
        } else {
            window.location = links[i].href;
        }
        return;
    }
}

// Flip the links to now search bottom-up
links = links.reverse();

var regexes = [];

regexes.push(/\bnext\b/i);

regexes.push(/→/i);
regexes.push(/»/i);

// Attempt to match links based on text or class name (first match wins)
for(var r in regexes){
    for(var i in links){
        var text = links[i].innerText.trim();
        var className = links[i].className.trim();
        if(links[i].href && 
                (text.match(regexes[r]) || className.match(regexes[r]))){
            links[i].click();
            return;
        }
    }
}})();