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var parentElement;
var actualChild;
var actualWord;
var words;
var originalNode = null;
var modifiedNode = null;
function trim(s) {
s = ( s || '' ).replace( /^\s+|\s+$/g, '' );
return s.replace(/[\n\r\t]/g,' ');
}
function init() {
parentElement = document.getElementsByTagName("body")[0];
actualChild = new Array();
actualWord = 0;
actualChild.push(0);
}
function highLightNextWordInt() {
var nodeList = parentElement.childNodes;
ini_posi = actualChild[actualChild.length - 1];
for (var i=ini_posi; i < nodeList.length; i++) {
var node = nodeList[i];
if ((node.nodeName == "#text") && (trim(node.nodeValue) != '')) {
node_text = trim(node.nodeValue);
words = node_text.split(" ");
if (actualWord < words.length) {
originalNode = document.createTextNode(node.nodeValue);
prev_text = '';
for (var p1 = 0; p1 < actualWord; p1++) {
prev_text = prev_text + words[p1] + " ";
}
var textNode1 = document.createTextNode(prev_text);
var textNode2 = document.createTextNode(words[actualWord]+" ");
post_text = '';
for (var p2 = actualWord + 1; p2 < words.length; p2++) {
post_text = post_text + words[p2] + " ";
}
var textNode3 = document.createTextNode(post_text);
var newParagraph = document.createElement('p');
var boldNode = document.createElement('b');
boldNode.appendChild(textNode2);
newParagraph.appendChild(textNode1);
newParagraph.appendChild(boldNode);
newParagraph.appendChild(textNode3);
parentElement.insertBefore(newParagraph, node);
parentElement.removeChild(node);
modifiedNode = newParagraph;
actualWord = actualWord + 1;
if (actualWord >= words.length) {
actualChild.pop();
actualChild[actualChild.length - 1] = actualChild[actualChild.length - 1] + 2;
actualWord = 0;
parentElement = parentElement.parentNode;
}
}
throw "exit";
} else {
if (node.childNodes.length > 0) {
parentElement = node;
actualChild.push(0);
actualWord = 0;
highLightNextWordInt();
actualChild.pop();
}
}
}
return;
}
function highLightNextWord() {
if (typeof parentElement == "undefined") {
init();
}
if (originalNode != null) {
modifiedNode.parentNode.insertBefore(originalNode, modifiedNode);
modifiedNode.parentNode.removeChild(modifiedNode);
}
try {
highLightNextWordInt();
} catch(er) {
}
}
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