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// ==UserScript==// @name           quackulator.js// @namespace      http://example.org// @description    tells you your new ratio if you download a torrent without seeding// @include        http://www.norbits.net/details.php?id=*// @include        http://norbits.net/details.php?id=*// @include        https://www.norbits.net/details.php?id=*// @include        https://norbits.net/details.php?id=*// ==/UserScript==(function(){        if(location.hostname.indexOf('norbits.net') == -1 ||         location.pathname.indexOf('/details.php') == -1) {        return false;    }       function getNodes(expression, startElement) {       startElement = startElement || document;       var nodes = document.evaluate( expression, startElement, null,                                       XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null );              return nodes;    }    function trim(str) {        return str.replace(/^\s\s*/, '').replace(/\s\s*$/, '');    }    function getGigaBytes(text){        var gigabytes, numbers, suffix;        text = trim(text);                if(text == 'Inf.' || text == '---') {            return 0;        }                var _tmp = text.split(' ');        numbers  = Number(_tmp[0]);        suffix   = _tmp[1];        //alert('suffix er: "' + suffix + "'")        switch(suffix){            case 'GB':                gigabytes =  numbers;                break;            case 'TB':                gigabytes = numbers*1024;                break;            case 'MB':                gigabytes = numbers*0.0009765625;                break;            case 'kB':                //no point in doing calculations with that low numbers                gigabytes = 0;                 break;            default:                gigabytes = 0;                break;        }        return gigabytes;    }        function _t(e) {       try {            var tableRow = getNodes('//tr//td[@class="rowhead" and' +            ' contains(text(), "St") and contains(text(), "rrelse")]/..').snapshotItem(0);            if(!tableRow) {                return;            }            //<TD class="rowhead">Størrelse</TD><TD valign="top" align="left">5.48 GB (5,887,848,401 bytes)</TD>            var sizeNode = getNodes('.//td[2]', tableRow).snapshotItem(0);                        if(!sizeNode) {                return;            }                        var activeTorrentsNode = getNodes('//font[text()="Akt:"]').snapshotItem(0);            if(!activeTorrentsNode){ return;}            var uploadNode = getNodes('//font[text()="Opp:"]').snapshotItem(0);            if(!uploadNode){ return;}            var uploaded = getGigaBytes(uploadNode.nextSibling.textContent);//always in GB            var downloadNode = getNodes('//font[text()="Ned:"]').snapshotItem(0);            if(!downloadNode){ return;}            var downloaded = getGigaBytes(downloadNode.nextSibling.textContent);//always in GB            //<tr><td class="rowhead">Størrelse</td><td valign="top" align=left>5.48 GB (5,887,848,401 bytes)</td></tr>            var size = getGigaBytes(sizeNode.textContent);            var newDownload = Number(downloaded)+ Number(size);                        var newRatio = '';                        if(uploaded !=0) {                newRatio = (uploaded/newDownload).toFixed(2);            } else {                newRatio = '---';            }                        var arow = document.createElement('tr');                        var cell1 = document.createElement('td');            cell1.className = 'rowhead';            cell1.appendChild(document.createTextNode('Quackulator'));            arow.appendChild(cell1);                        var cell2 = document.createElement('td');            cell2.vAlign='top';            cell2.align = 'left';            cell2.appendChild(document.createTextNode(newRatio + '<-- ny ratio hvis du laster ned denne uten å seede noe'));            arow.appendChild(cell2);                        tableRow.parentNode.insertBefore(arow, tableRow.nextSibling);                           } catch(e) {            alert('feil: ' + e)       }    }       if(window.opera) {        window.addEventListener('DOMContentLoaded', _t, false);        } else {        window.addEventListener('load', _t, false);   }})();