var ref = "";

function highlightWord(node,word) {
// Iterate into this nodes childNodes
if (node.hasChildNodes) {
var hi_cn;
for (hi_cn=0;hi_cn<node.childNodes.length;hi_cn++) {
highlightWord(node.childNodes[hi_cn],word);
}
}

// And do this node itself
if (node.nodeType == 3) { // text node
tempNodeVal = node.nodeValue.toLowerCase();
tempWordVal = word.toLowerCase();
if (tempNodeVal.indexOf(tempWordVal) != -1) {
pn = node.parentNode;
if (pn.className != "searchword") {
// word has not already been highlighted!
nv = node.nodeValue;
ni = tempNodeVal.indexOf(tempWordVal);
// Create a load of replacement nodes
before = document.createTextNode(nv.substr(0,ni));
docWordVal = nv.substr(ni,word.length);
after = document.createTextNode(nv.substr(ni+word.length));
hiwordtext = document.createTextNode(docWordVal);
hiword = document.createElement("em"); // modified from span to em
hiword.className = "searchword";
hiword.appendChild(hiwordtext);
pn.insertBefore(before,node);
pn.insertBefore(hiword,node);
pn.insertBefore(after,node);
pn.removeChild(node);
}
}
}
}


function googleSearchHighlight() {
if (!document.createElement) return;

        if (document.referrer.search(/google.+/) != -1 || document.referrer.search(/yahoo.+/) != -1 || document.referrer.search(/search\.msn.+/) != -1 ) { // für Google und Co.
//if (document.referrer.search(/google.+/) != -1) {
ref = decodeURI(document.referrer);
//} else { // für seiteninterne Suche
}
if (document.referrer.search(/suchen.php.+/) != -1) { // für seiteninterne Suche
ref = unescape(document.referrer);
}

// added for site search - where target-file is called with ?q=searchword
if (window.location.search) ref = unescape(window.location.search);

if (ref.indexOf('?') == -1) return;

qs = ref.substr(ref.indexOf('?')+1);
qsa = qs.split('&');

for (i=0;i<qsa.length;i++) {
qsip = qsa[i].split('=');
        if (qsip.length == 1) continue;
        if (qsip[0] == 'q' || qsip[0] == 'p' || qsip[0] == 's') { // q= for Google, p= for Yahoo, s= for wordpress

// words not to be highlighted:
qsip[1] = qsip[1].replace(/\"|\'|\*|;|\bfür\s*\b|\bde.\s*\b|\bdie\s*\b|\bdas\s*\b|\bauf\s*\b|\beine+.\s*\b|\bein\s*\b|\bund\s*\b|\b(i|a).\s*\b|\bwie\s*\b|\bkann\s*\b|\bich\s*\b|\bman\s*\b|\bmit\s*\b|\ist\s*\b|Suchbegriff/gi,'');
//qsip[1] = qsip[1].replace(/\"|\'|\*|;|Suchbegriff/gi,'');
qsip[1] = qsip[1].replace(/-/gi,' ');
                        if (document.URL.indexOf('blog') >= 1) qsip[1] = qsip[1].replace(/\d\d/g,''); // 2-digit number in blogs
                        
// remove all blanks and '+' before and after searchterm (bugfix: crashes FF & Op)
qsip[1] = qsip[1].replace(/^(\s+|\++)/,'').replace(/(\++)$/,'').replace(/(\s+)$/,'');

if (qsip[1] != '') {
words = unescape(qsip[1].replace(/\+/g,' ')).split(/\s+/);
for (w=0;w<words.length;w++) {
highlightWord(document.getElementsByTagName("body")[0],words[w]);
                }
}
        }
}
}

window.onload = googleSearchHighlight;