var uiWebview_SearchResultCount = 0;
 
/*!
 @method     uiWebview_HighlightAllOccurencesOfStringForElement
 @abstract   // helper function, recursively searches in elements and their child nodes
 @discussion // helper function, recursively searches in elements and their child nodes
 
 element    - HTML elements
 keyword    - string to search
 */
 
function uiWebview_HighlightAllOccurencesOfStringForElement(element,keyword) {
 
    if (element) {
        if (element.nodeType == 3) {        // Text node
            while (true) {
                //if (counter < 1) {
                var value = element.nodeValue;  // Search for keyword in text node
 
                var tmp=value.toLowerCase();
 
 
                tmp= tmp.replace(/à|á|ạ|ả|ã|â|ầ|ấ|ậ|ẩ|ẫ|ă|ằ|ắ|ặ|ẳ|ẵ/g,"a");
                tmp= tmp.replace(/đ/g,"d");
                tmp= tmp.replace(/é|è|ẻ|ẽ|ẹ|ê|ế|ề|ể|ễ|ệ/g,"e");
                tmp= tmp.replace(/í|ì|ỉ|ĩ|ị/g,"i");
                tmp= tmp.replace(/ô|ố|ồ|ổ|ỗ|ộ|ơ|ớ|ờ|ở|ỡ|ợ/g,"o");
                tmp= tmp.replace(/ú|ù|ủ|ũ|ụ|ư|ứ|ừ|ử|ữ|ự/g,"u");
                tmp= tmp.replace(/ý|ỳ|ỷ|ỹ|ỵ/g,"y");
 
 
                keyword= keyword.replace(/à|á|ạ|ả|ã|â|ầ|ấ|ậ|ẩ|ẫ|ă|ằ|ắ|ặ|ẳ|ẵ/g,"a");
                keyword= keyword.replace(/đ/g,"d");
                keyword= keyword.replace(/é|è|ẻ|ẽ|ẹ|ê|ế|ề|ể|ễ|ệ/g,"e");
                keyword= keyword.replace(/í|ì|ỉ|ĩ|ị/g,"i");
                keyword= keyword.replace(/ô|ố|ồ|ổ|ỗ|ộ|ơ|ớ|ờ|ở|ỡ|ợ/g,"o");
                keyword= keyword.replace(/ú|ù|ủ|ũ|ụ|ư|ứ|ừ|ử|ữ|ự/g,"u");
                keyword= keyword.replace(/ý|ỳ|ỷ|ỹ|ỵ/g,"y");
 
 
 
 
                var idx = tmp.indexOf(keyword);
 
                if (idx < 0) break;             // not found, abort
 
                //(value.split);
 
                //we create a SPAN element for every parts of matched keywords
                var span = document.createElement("span");
                var text = document.createTextNode(value.substr(idx,keyword.length));
                span.appendChild(text);
 
                span.setAttribute("class","uiWebviewHighlight");
                span.style.backgroundColor="yellow";
                span.style.color="black";
 
                uiWebview_SearchResultCount++;    // update the counter
 
                text = document.createTextNode(value.substr(idx+keyword.length));
                element.deleteData(idx, value.length - idx);
                var next = element.nextSibling;
                element.parentNode.insertBefore(span, next);
                element.parentNode.insertBefore(text, next);
                element = text;
 
            }
        } else if (element.nodeType == 1) { // Element node
            if (element.style.display != "none" && element.nodeName.toLowerCase() != 'select') {
                for (var i=element.childNodes.length-1; i>=0; i--) {
                    uiWebview_HighlightAllOccurencesOfStringForElement(element.childNodes[i],keyword);
                }
            }
        }
    }
}
 
// the main entry point to start the search
function uiWebview_HighlightAllOccurencesOfString(keyword) {
    //uiWebview_RemoveAllHighlights();
    uiWebview_HighlightAllOccurencesOfStringForElement(document.body, keyword.toLowerCase());
}
 
// helper function, recursively removes the highlights in elements and their childs
function uiWebview_RemoveAllHighlightsForElement(element) {
    if (element) {
        if (element.nodeType == 1) {
            if (element.getAttribute("class") == "uiWebviewHighlight") {
                var text = element.removeChild(element.firstChild);
                element.parentNode.insertBefore(text,element);
                element.parentNode.removeChild(element);
                return true;
            } else {
                var normalize = false;
                for (var i=element.childNodes.length-1; i>=0; i--) {
                    if (uiWebview_RemoveAllHighlightsForElement(element.childNodes[i])) {
                        normalize = true;
                    }
                }
                if (normalize) {
                    element.normalize();
                }
            }
        }
    }
    return false;
}
 
// the main entry point to remove the highlights
function uiWebview_RemoveAllHighlights() {
    uiWebview_SearchResultCount = 0;
    uiWebview_RemoveAllHighlightsForElement(document.body);
}