Bookmarklet for in page search

PageSearchBookmarklet.js

(function () {
var result=0;
var text = prompt("Find",'');

function find (node) {
    if (node.nodeType == 1) {
        var children = node.childNodes;
        for (var i=0;i<children.length;i++) {
            var child = children[i];
            var res = find(child);
            if (res !== undefined) {
                return (res.nodeType == 1) ? res : node;
            }
        }
    }
    else if (node.nodeType == 3 && node.nodeValue !== null) {
        if (node.nodeValue.indexOf(text) != -1)
            return node;
    }
}

     var result = find(document.body);
     if (result !== undefined) {
         window.scrollTo(0,result.offsetTop);
     }
 })();