//<source lang="javascript">
var wlUnwatch = new function(){

var unWatchLinks = [];
var watchMsg = window.wgAjaxWatch ? wgAjaxWatch.watchMsg : 'Watch';
var unwatchMsg = window.wgAjaxWatch ? wgAjaxWatch.unwatchMsg : 'Unwatch';
var wlForm;
var inProgress = null;
var timeoutID = null;

this.onLoad = function() { //public method
    if (!(wlForm = document.forms[0]) || !wlForm.namespace) return;
    var links = document.getElementById('content').getElementsByTagName('a');
    for (var i = 0; i < links.length; i++){ //append (x) links after history links
        if (!links[i].href.match(/[?&]action=history([&#]|$)/)) continue;
        var unwatch = document.createElement('a');
        unwatch.href = wgServer+wgScript+'?action=unwatch&title='+encodeURIComponent(links[i].title);
        unwatch.onclick = onClick;
        unWatchLinks.push(unwatch);
        var nextEl = links[i].nextSibling.nextSibling; //item after )
        nextEl.parentNode.insertBefore(document.createTextNode(' ('), nextEl);
        nextEl.parentNode.insertBefore(unwatch, nextEl);
        nextEl.parentNode.insertBefore(document.createTextNode(') '), nextEl);
        setUnwatchLink(unwatch, false);
    }
}


function setUnwatchLink (unwatchLink, state) {
    unwatchLink.innerHTML = state ? 'segui' : 'non seguire';
    unwatchLink.title = state ? watchMsg : unwatchMsg;
}

function getPgName (unwatchLink){
    return decodeURIComponent(unwatchLink.href.match(/&title=(.+)/)[1]);
}


function onClick(e) {
    if (inProgress) return false;
    if (!e) var e = window.event;
    if (e.target) var targ = e.target; else if (e.srcElement) var targ = e.srcElement;
    inProgress = getPgName(targ);
    timeoutID = window.setTimeout(    function() {inProgress = null},    10000    ); 
    //call server
    var action = (targ.innerHTML == 'non seguire') ? 'u' : 'w';
    sajax_do_call('wfAjaxWatch', [inProgress, action], showResult);
    return false;
}


function showResult (request) {
    if (timeoutID) window.clearTimeout(timeoutID);
    var response = request.responseText;
    if (window.wlUnwatchShowMsg) jsMsg (response.substr(4), 'watch');
    var name = inProgress, name2 = name, state, prefix, idx, ns = 0, pg, i, el; 
    inProgress = null;
    if (response.match(/^<u#>/))  
        state = true
    else if (response.match(/^<w#>/))
        state = false
    else return; //unrecognized response
    //find the name of "other page"
    if ((idx = name.indexOf(':')) != -1){ //not main namespace
        prefix = name.substring(0,idx);
        name2 = name.substring(idx + 1)
        for (i=2; i < wlForm.namespace.options.length; i++)
            if (wlForm.namespace.options[i].text == prefix)
                ns = i - 1;
        if (ns == 0) name2 = name; // guess : was a  part of the page name
    }
    if (ns % 2)    ns--; else ns++; //switch to  "other" namespace
    if (ns > 0) name2 = wlForm.namespace.options[ns+1].text + ':' +  name2;
    //now mark all pages that are either name or name2
    for (i=0; i<unWatchLinks.length; i++)
        if ((pg = getPgName(unWatchLinks[i])) && (pg==name || pg==name2)) {
            setUnwatchLink (unWatchLinks[i], state);
            el = unWatchLinks[i]; //now mark the whole line
            while ((el=el.previousSibling) && (el.nodeName!='DIV') && (el.nodeName!='BR')) 
                if (el.style) el.style.textDecoration = state ? 'line-through' : '';
        }
}

}//obj


if (wgCanonicalSpecialPageName && wgCanonicalSpecialPageName=='Watchlist' && wgAction=='view') {
    if (doneOnloadHook) wlUnwatch.onLoad(); //if imported dynamically
    else addOnloadHook (wlUnwatch.onLoad)
}
//</source>