/* http://www.kryogenix.org/code/browser/searchhi/ */
/* Modified  by webdesign.weisshart.de/  28.03.06*/
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;
            klasse = "searchword"+w; // different colors for differnt searchterms
            if (pn.className != klasse) {
                // 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 = klasse;
                hiword.appendChild(hiwordtext);
                pn.insertBefore(before,node);
                pn.insertBefore(hiword,node);
                pn.insertBefore(after,node);
                pn.removeChild(node);
            }
        }
    }
}
function Highlight() {
    if (!document.createElement) return;

    if (document.referrer.search(/google.+/) != -1 || document.referrer.search(/lycos.+/) != -1 || document.referrer.search(/yahoo.+/) != -1 || document.referrer.search(/fireball.+/) != -1 ||document.referrer.search(/search\.msn.+/) != -1 ) {
        ref = decodeURIComponent(document.referrer);
        if (ref.indexOf('?') == -1) return;
    }
    // added for site search
    // the following if { } is required for framesets only
        if (document.referrer.search(/suchen.+/) != -1 && document.URL.indexOf("suchen") == -1 ) {
           ref = unescape(document.referrer);
       if (window.location.search) ref = unescape(window.location.search);
    }
    if (window.location.search) { ref = unescape(window.location.search); }

    qs = ref.substr(ref.indexOf('?')+1);
        qs = qs.replace(/\.|,|;|!|\?|:|"|'|\//gi,'');
    qsa = qs.split('&');
    for (i=0;i<qsa.length;i++) {
        qsip = qsa[i].split('=');
            if (qsip.length == 1 || qsip.length == 5) continue;
            if (qsip[0] == 'q' || qsip[0] == 'query' ||qsip[0] == 'p' || qsip[0] == 's' ) { // q= for Google, p= for Yahoo, query= Fireball, Lycos etc., s= for wordpress
            if (qsip[1].length < 3 ) continue;

            // words not to be highlighted:
            qsip[1] = qsip[1].replace(/\"|\'|\*|;|\bbei\b|\bfür\b|\bvon\b|\bnicht\b|\bde.\s*\b|\bdie\b|\bdas\b|\bauf\b|\bein\b|\bund\b|\bwie\b|\bkann\b|\bich\b|\bman\b|\bmit\b|\ist\b|Suchbegriff/gi,'');
                
            qsip[1] = qsip[1].replace(/Suchbegriff/gi,'');
                        if (document.URL.indexOf('blog') >= 1) qsip[1] = qsip[1].replace(/\d\d|\d/g,''); // 1/2-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++) {
                    if (words[w].length >= 3) {
                                  // Endlosschleife: words[w] = words[w].replace(/\.|,|;|!|\?|:|"|'|-|\//gi,'');
                        highlightWord(document.getElementsByTagName("body")[0],words[w]);
                    }
                        }
            }
            }
    }
}
window.onload = Highlight;