root/trunk/Vanilla/templates/vanilla+authentication+comments+userpics/javascript.mtml @ 916

<$mt:var name="user-auth" value="signin-content"$>
<mt:Ignore>
    Set show_userpic to 1 to enable userpics in the signin line
    - Requires Community Solution
    - Note: This will update username to link to Community Solution "edit profile" script. This script assumes that you are using profiles and thus links to "view profile" screen. If the template set is not using profiles then the Community Solution "Profile Edit" Global System Template should be updated.
</mt:Ignore>
<$mt:var name="show_userpic" value="1"$>

/* section *****************************************************************/

// The cookie name to use for storing the blog-side comment session cookie.
var mtCookieName = "<$mt:UserSessionCookieName$>";
var mtCookieDomain = "<$mt:UserSessionCookieDomain$>";
var mtCookiePath = "<$mt:UserSessionCookiePath$>";
var mtCookieTimeout = <$mt:UserSessionCookieTimeout$>;
var is_preview;
var user;

/* Login Functions *****************************************************************/

<mt:Ignore>
/***
 * Issues a request to the MT comment script to retrieve the currently
 * logged-in user (if any).
 */
</mt:Ignore>
var mtFetchedUser = false;
<mt:IfBlog>
function mtFetchUser(cb) {
    if (!cb) cb = 'mtSetUser';
    if ( ( cb == 'mtSetUser' ) && mtGetUser() ) {
        var url = document.URL;
        url = url.replace(/#.+$/, '');
        url += '#comments-open';
        location.href = url;
    } else {
        // we aren't using AJAX for this, since we may have to request
        // from a different domain. JSONP to the rescue.
        mtFetchedUser = true;
        var script = document.createElement('script');
        var ts = new Date().getTime();
        script.src = '<$mt:CGIPath$><$mt:CommentScript$>?__mode=session_js&blog_id=<$mt:BlogID$>&jsonp=' + cb + '&ts=' + ts;
        (document.getElementsByTagName('head'))[0].appendChild(script);
    }
}
</mt:IfBlog>

<mt:Ignore>
/***
 * A routine that displays various phrases based upon users authenticated status
 */
</mt:Ignore>

// <a href="#">Signin</a>
// You are signed in as <a href="#">UserName</a> (<a href="#">Sign out</a>)
// You do not have permission to sign in to this blog

function mtUpdateSignInWidget(u) {
    var el = document.getElementById('<$mt:var name="user-auth"$>');
    var content = '';
    var doit = 1;
    if (!el) return;
    if (u) {
        if (u && u.is_authenticated) {
            user = u;
            mtSaveUser();
        } else {
            // user really isn't logged in; so let's do this!
            return mtSignIn();
        }
    } else {
        u = mtGetUser();
    }
    if (u && u.name) {
<mt:If name="show_userpic">
        if (u.userpic)
            content += '<img src="' + u.userpic + '" width="50" height="50" />';
</mt:If>
        var url;
        if (u.is_authenticated) {
            if (u.is_author) {
<mt:If name="show_userpic">
                url = '<$mt:CGIPath$><$mt:CommunityScript$>?__mode=edit&blog_id=<$mt:BlogID$>';
                url += '&return_to=' + encodeURIComponent(document.URL);
<mt:Else>
                url = '<$mt:CGIPath$><$mt:CommentScript$>?__mode=edit_profile&blog_id=<$mt:BlogID$>';
                url += '&static=' + encodeURIComponent( location.href );
</mt:If>
            } else {
                url = u.url;
            }
        } else if (u.url) {
            url = u.url;
        } else {
            url = null;
        }
        content += '<__trans phrase="You are signed in as " escape="js">';
        if (url)
            content += '<a href="' + url + '">' + u.name + '</a>';
        else
            content += u.name;
        content += '.  (<a href="javascript:void(0)" onclick="return mtSignOutOnClick()"><__trans phrase="sign out" escape="js"></a>)';
    } else if (u && u.is_banned) {
        content = '<__trans phrase="You do not have permission to sign in to this blog." escape="js">';
    } else {
    //    content = '<a href="javascript:void(0)" onclick="return mtSignInOnClick(\'<$mt:var name="user-auth"$>\')"><__trans phrase="Sign In" escape="js"></a>';
        doit = 0;
    }
    if (doit) {
        el.innerHTML = content;
    }
}

<mt:IfBlog>
<mt:IfRegistrationAllowed>
/***
 * If request contains a '#_login' or '#_logout' hash, use this to
 * also delete the blog-side user cookie, since we're coming back from
 * a login, logout or edit profile operation.
 */
var clearCookie = ( window.location.hash && window.location.hash.match( /^#_log(in|out)/ ) ) ? true : false;
if (clearCookie) {
    // clear any logged in state
    mtClearUser();
    if (RegExp.$1 == 'in')
        mtFetchUser();
} else {
    <mt:Ignore>
    /***
     * Uncondition this call to fetch the current user state (if available)
     * from MT upon page load if no user cookie is already present.
     * This is okay if you have a private install, such as an Intranet;
     * not recommended for public web sites!
     */
    </mt:Ignore>
    if ( is_preview && !user )
        mtFetchUser();
}
</mt:IfRegistrationAllowed>
</mt:IfBlog>

<mt:Ignore>
/***
 * Retrieves an object of the currently logged in user's state.
 * If no user is logged in or cookied, this will return null.
 */
</mt:Ignore>
function mtGetUser() {
    if (!user) {
        var cookie = mtGetCookie(mtCookieName);
        if (!cookie) return;
        user = mtUnbakeUserCookie(cookie);
        if (! user) {
            user = {};
            user.is_anonymous = true;
            user.can_post = false;
            user.is_author = false;
            user.is_banned = false;
            user.is_trusted = false;
        }
    }
    return user;
}

<mt:Ignore>
/***
 * Assigns a user object as the actively logged in user; also saves the
 * user information in a browser cookie.
 */
</mt:Ignore>
function mtSetUser(u) {
    if (u) {
        // persist this
        user = u;
        mtSaveUser();
        // sync up user greeting
        mtFireEvent('usersignin');
    }
}

<mt:Ignore>
/***
 * Persists a copy of the current user cookie into the browser cookie stash.
 */
</mt:Ignore>
function mtSaveUser(f) {
    // We can't reliably store the user cookie during a preview.
    if (is_preview) return;

    var u = mtGetUser();

    if (f && (!u || u.is_anonymous)) {
        if ( !u ) {
            u = {};
            u.is_authenticated = false;
            u.can_comment = true;
            u.is_author = false;
            u.is_banned = false;
            u.is_anonymous = true;
            u.is_trusted = false;
        }
        if (f.author != undefined) u.name = f.author.value;
        if (f.email != undefined) u.email = f.email.value;
        if (f.url != undefined) u.url = f.url.value;
    }

    if (!u) return;

    var cache_period = mtCookieTimeout * 1000;

    // cache anonymous user info for a long period if the
    // user has requested to be remembered
    if (u.is_anonymous && f && f.bakecookie && f.bakecookie.checked)
        cache_period = 365 * 24 * 60 * 60 * 1000;

    var now = new Date();
    mtFixDate(now);
    now.setTime(now.getTime() + cache_period);

    var cmtcookie = mtBakeUserCookie(u);
    mtSetCookie(mtCookieName, cmtcookie, now, mtCookiePath, mtCookieDomain,
        location.protocol == 'https:');
}

<mt:Ignore>
/***
 * Handles the action of the "Sign in" link. First clears any existing
 * user cookie, then directs to the MT comment script to sign the user in.
 */
</mt:Ignore>
function mtSignIn() {
    var doc_url = document.URL;
    doc_url = doc_url.replace(/#.+/, '');
    var url = '<$mt:SignInLink$>';
    if (is_preview) {
        if ( document['comments_form'] ) {
            var entry_id = document['comments_form'].entry_id.value;
            url += '&entry_id=' + entry_id;
        } else {
            url += '&return_url=<$mt:BlogURL encode_url="1"$>';
        }
    } else {
        url += '&return_url=' + encodeURIComponent(doc_url);
    }
    mtClearUser();
    location.href = url;
}

function mtSignInOnClick(sign_in_element) {
    var el;
    if (sign_in_element) {
        // display throbber
        el = document.getElementById(sign_in_element);
        if (!el)  // legacy MT 4.x element id
            el = document.getElementById('comment-form-external-auth');
    }
    if (el)
        el.innerHTML = '<__trans phrase="Signing in..." escape="js"> <span class="status-indicator">&nbsp;</span>';

    mtClearUser(); // clear any 'anonymous' user cookie to allow sign in
    mtFetchUser('mtSetUserOrLogin');
    return false;
}

function mtSetUserOrLogin(u) {
    if (u && u.is_authenticated) {
        mtSetUser(u);
    } else {
        // user really isn't logged in; so let's do this!
        mtSignIn();
    }
}

<mt:Ignore>
/***
 * Handles sign out from the web site.
 * First clears any existing user cookie, then direts to the MT comment
 * script to sign the user out.
 */
</mt:Ignore>
function mtSignOut(entry_id) {
    mtClearUser();
    var doc_url = document.URL;
    doc_url = doc_url.replace(/#.+/, '');
    var url = '<$mt:SignOutLink$>';
    if (is_preview) {
        if ( document['comments_form'] ) {
            var entry_id = document['comments_form'].entry_id.value;
            url += '&entry_id=' + entry_id;
        } else {
            url += '&return_url=<$mt:BlogURL encode_url="1"$>';
        }
    } else {
        url += '&return_url=' + encodeURIComponent(doc_url);
    }
    location.href = url;
}

<mt:Ignore>
/***
 * Handles the action of the "Sign out" link.
 */
</mt:Ignore>
function mtSignOutOnClick() {
    mtSignOut();
    return false;
}



/* Cookie *****************************************************************/

<mt:Ignore>
/***
 * Persists a copy of the current user cookie into the browser cookie stash.
 */
</mt:Ignore>
function mtSaveUser(f) {
    // We can't reliably store the user cookie during a preview.
    if (is_preview) return;

    var u = mtGetUser();

    if (f && (!u || u.is_anonymous)) {
        if ( !u ) {
            u = {};
            u.is_authenticated = false;
            u.can_comment = true;
            u.is_author = false;
            u.is_banned = false;
            u.is_anonymous = true;
            u.is_trusted = false;
        }
        if (f.author != undefined) u.name = f.author.value;
        if (f.email != undefined) u.email = f.email.value;
        if (f.url != undefined) u.url = f.url.value;
    }

    if (!u) return;

    var cache_period = mtCookieTimeout * 1000;

    // cache anonymous user info for a long period if the
    // user has requested to be remembered
    if (u.is_anonymous && f && f.bakecookie && f.bakecookie.checked)
        cache_period = 365 * 24 * 60 * 60 * 1000;

    var now = new Date();
    mtFixDate(now);
    now.setTime(now.getTime() + cache_period);

    var cmtcookie = mtBakeUserCookie(u);
    mtSetCookie(mtCookieName, cmtcookie, now, mtCookiePath, mtCookieDomain,
        location.protocol == 'https:');
}

<mt:Ignore>
/***
 * Clears the blog-side user cookie.
 */
</mt:Ignore>
function mtClearUser() {
    user = null;
    mtDeleteCookie(mtCookieName, mtCookiePath, mtCookieDomain,
        location.protocol == 'https:');
}

<mt:Ignore>
/***
 * Sets a browser cookie.
 */
</mt:Ignore>
function mtSetCookie(name, value, expires, path, domain, secure) {
    if (domain && domain.match(/^\.?localhost$/))
        domain = null;
    var curCookie = name + "=" + escape(value) +
        (expires ? "; expires=" + expires.toGMTString() : "") +
        (path ? "; path=" + path : "") +
        (domain ? "; domain=" + domain : "") +
        (secure ? "; secure" : "");
    document.cookie = curCookie;
}

<mt:Ignore>
/***
 * Retrieves a browser cookie.
 */
</mt:Ignore>
function mtGetCookie(name) {
    var prefix = name + '=';
    var c = document.cookie;
    var cookieStartIndex = c.indexOf(prefix);
    if (cookieStartIndex == -1)
        return '';
    var cookieEndIndex = c.indexOf(";", cookieStartIndex + prefix.length);
    if (cookieEndIndex == -1)
        cookieEndIndex = c.length;
    return unescape(c.substring(cookieStartIndex + prefix.length, cookieEndIndex));
}

<mt:Ignore>
/***
 * Deletes a browser cookie.
 */
</mt:Ignore>
function mtDeleteCookie(name, path, domain, secure) {
    if (mtGetCookie(name)) {
        if (domain && domain.match(/^\.?localhost$/))
            domain = null;
        document.cookie = name + "=" +
            (path ? "; path=" + path : "") +
            (domain ? "; domain=" + domain : "") +
            (secure ? "; secure" : "") +
            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}

<mt:Ignore>
/***
 * Serializes a user object into a string, suitable for storing as a cookie.
 */
</mt:Ignore>
function mtBakeUserCookie(u) {
    var str = "";
    if (u.name) str += "name:'" + mtEscapeJS(u.name) + "';";
    if (u.url) str += "url:'" + mtEscapeJS(u.url) + "';";
    if (u.email) str += "email:'" + mtEscapeJS(u.email) + "';";
    if (u.auth_type) str += "auth_type:'" + u.auth_type + "';";
    if (u.is_authenticated) str += "is_authenticated:'1';";
    if (u.profile) str += "profile:'" + mtEscapeJS(u.profile) + "';";
    if (u.userpic) str += "userpic:'" + mtEscapeJS(u.userpic) + "';";
    if (u.sid) str += "sid:'" + mtEscapeJS(u.sid) + "';";
    str += "is_trusted:'" + (u.is_trusted ? "1" : "0") + "';";
    str += "is_author:'" + (u.is_author ? "1" : "0") + "';";
    str += "is_banned:'" + (u.is_banned ? "1" : "0") + "';";
    str += "can_post:'" + (u.can_post ? "1" : "0") + "';";
    str += "can_comment:'" + (u.can_comment ? "1" : "0") + "';";
    str = str.replace(/;$/, '');
    return str;
}

<mt:Ignore>
/***
 * Unserializes a user cookie and returns a user object with the restored
 * state.
 */
</mt:Ignore>
function mtUnbakeUserCookie(s) {
    if (!s) return;

    var u = {};
    var m;
    while (m = s.match(/^((name|url|email|auth_type|is_authenticated|profile|userpic|sid|is_trusted|is_author|is_banned|can_post|can_comment):'([^']+?)';?)/)) {
        s = s.substring(m[1].length);
        if (m[2].match(/^(is|can)_/)) // boolean fields
            u[m[2]] = m[3] == '1' ? true : false;
        else
            u[m[2]] = mtUnescapeJS(m[3]);
    }
    if (u.is_authenticated) {
        u.is_anonymous = false;
    } else {
        u.is_anonymous = true;
        u.can_post = false;
        u.is_author = false;
        u.is_banned = false;
        u.is_trusted = false;
    }
    return u;
}

/* Comment Messaging *****************************************************************/

<mt:Ignore>
/***
 * Called when an entry archive page is loaded.
 * This routine controls which elements of the comment form are shown
 * or hidden, depending on commenter type and blog configuration.
 */
</mt:Ignore>
<mt:IfBlog>
function mtEntryOnLoad() {
    <mt:Unless tag="IfPingsAccepted">mtHide('trackbacks-info');</mt:Unless>
    <mt:Unless tag="IfCommentsAccepted">mtHide('comments-open');</mt:Unless>
    mtFireEvent('usersignin');
}

function mtEntryOnUnload() {
    if (mtRequestSubmitted) {
        var cf = document['comments_form'];
        if (cf) {
            if (cf.post && cf.post.disabled)
                cf.post.disabled = false;
            if (cf.preview_button && cf.preview_button.disabled)
                cf.preview_button.disabled = false;
        }
        mtRequestSubmitted = false;
    }
    return true;
}

mtAttachEvent('usersignin', mtUserOnLoad);
</mt:IfBlog>

<mt:Ignore>
/***
 * Handles the display of the greeting message, depending on what kind of
 * user is logged in and blog comment policy.
 */
</mt:Ignore>
<mt:IfBlog>
function mtShowGreeting() {
<mt:IfRegistrationAllowed>
    var reg_reqd = <mt:IfRegistrationRequired>true<mt:Else>false</mt:IfRegistrationRequired>;

    var cf = document['comments_form'];
    if (!cf) return;

    var el = document.getElementById('comment-greeting');
    if (!el)  // legacy MT 4.x element id
        el = document.getElementById('comment-form-external-auth');
    if (!el) return;

    var eid = cf.entry_id;
    var entry_id;
    if (eid) entry_id = eid.value;

    var phrase;
    var u = mtGetUser();

    if ( u && u.is_authenticated ) {
        if ( u.is_banned ) {
            phrase = '<__trans phrase="You do not have permission to comment on this blog. ([_1]sign out[_2])" params="<a href="javascript:void(0);" onclick="return mtSignOutOnClick();">%%</a>" escape="js">';
        } else {
            var user_link;
            if ( u.is_author ) {
                user_link = '<a href="<$mt:CGIPath$><$mt:CommentScript$>?__mode=edit_profile&return_url=' + encodeURIComponent( location.href );
                user_link += '">' + u.name + '</a>';
            } else {
                // registered user, but not a user with posting rights
                if (u.url)
                    user_link = '<a href="' + u.url + '">' + u.name + '</a>';
                else
                    user_link = u.name;
            }
            // TBD: supplement phrase with userpic if one is available.
            phrase = '<__trans phrase="Thanks for signing in, __NAME__. ([_1]sign out[_2])" params="<a href="javascript:void(0)" onclick="return mtSignOutOnClick();">%%</a>" escape="js">';
            phrase = phrase.replace(/__NAME__/, user_link);
        }
    } else {
        if (reg_reqd) {
            phrase = '<__trans phrase="[_1]Sign in[_2] to comment." params="<a href="javascript:void(0)" onclick="return mtSignInOnClick('comment-greeting')">%%</a>" escape="js">';
        } else {
            phrase = '<__trans phrase="[_1]Sign in[_2] to comment, or comment anonymously." params="<a href="javascript:void(0)" onclick="return mtSignInOnClick('comment-greeting')">%%</a>" escape="js">';
        }
    }
    el.innerHTML = phrase;
<mt:Else>
    mtShowCaptcha();
</mt:IfRegistrationAllowed>
}
</mt:IfBlog>

<mt:Ignore>
/***
 * Function to hide/show/prepopulate fields based upon type of user that has authenticated
 */
</mt:Ignore>
<mt:IfBlog>
function mtUserOnLoad() {
    var u = mtGetUser();

    // if the user is authenticated, hide the 'anonymous' fields
    // and any captcha input if already shown
    if ( document.getElementById('comments-form')) {
        if ( u && u.is_authenticated ) {
            mtShow('comments-form');
            mtHide('comments-open-data');
            if (mtCaptchaVisible)
                mtHide('comments-open-captcha');
        } else {
<mt:IfRegistrationRequired>
            mtHide('comments-form');
</mt:IfRegistrationRequired>
        }
        if ( u && u.is_banned )
            mtHide('comments-form');

        // if we're previewing a comment, make sure the captcha
        // field is visible
        if (is_preview)
            mtShowCaptcha();
        else
            mtShowGreeting();

        // populate anonymous comment fields if user is cookied as anonymous
        var cf = document['comments_form'];
        if (cf) {
            if (u && u.is_anonymous) {
                if (u.email) cf.email.value = u.email;
                if (u.name) cf.author.value = u.name;
                if (u.url) cf.url.value = u.url;
                if (cf.bakecookie)
                    cf.bakecookie.checked = u.name || u.email;
            } else {
                if (u && u.sid && cf.sid)
                    cf.sid.value = u.sid;
            }
            if (cf.post.disabled)
                cf.post.disabled = false;
            if (cf.preview_button.disabled)
                cf.preview_button.disabled = false;
            mtRequestSubmitted = false;
        }
    }
}
</mt:IfBlog>


/* Comment Remember Me *****************************************************************/

<mt:Ignore>
/***
 * Called when the 'Remember me' checkbox is changed. If the checkbox
 * is cleared, the cached user cookie is immediately cleared.
 */
</mt:Ignore>
function mtRememberMeOnClick(b) {
    if (!b.checked)
        mtClearUser(b.form);
    return true;
}

/* Comment Parent *****************************************************************/

<mt:Ignore>
/***
 * Handles the action of the 'Reply' links.
 */
</mt:Ignore>
function mtReplyCommentOnClick(parent_id, author) {
    mtShow('comment-form-reply');

    var checkbox = document.getElementById('comment-reply');
    var label = document.getElementById('comment-reply-label');
    var text = document.getElementById('comment-text');

    // Populate label with new values
    var reply_text = '<__trans phrase="Replying to <a href="[_1]" onclick="[_2]">comment from [_3]</a>" params="#comment-__PARENT__%%location.href=this.href; return false%%__AUTHOR__" escape="js">';
    reply_text = reply_text.replace(/__PARENT__/, parent_id);
    reply_text = reply_text.replace(/__AUTHOR__/, author);
    label.innerHTML = reply_text;

    checkbox.value = parent_id; 
    checkbox.checked = true;
    try {
        // text field may be hidden
        text.focus();
    } catch(e) {
    }

    mtSetCommentParentID();
}

<mt:Ignore>
/***
 * Sets the parent comment ID when replying to a comment.
 */
</mt:Ignore>
function mtSetCommentParentID() {
    var checkbox = document.getElementById('comment-reply');
    var parent_id_field = document.getElementById('comment-parent-id');
    if (!checkbox || !parent_id_field) return;

    var pid = 0;
    if (checkbox.checked == true)
        pid = checkbox.value;
    parent_id_field.value = pid;
}

/* CAPTCHA *****************************************************************/

<mt:Ignore>
/***
 * Called when an input field on the comment form receives focus.
 */
</mt:Ignore>
function mtCommentFormOnFocus() {
    // if CAPTCHA is enabled, this causes the captcha image to be
    // displayed if it hasn't been already.
    mtShowCaptcha();
}

<mt:Ignore>
/***
 * Displays a captcha field for anonymous commenters.
 */
</mt:Ignore>
var mtCaptchaVisible = false;
function mtShowCaptcha() {
    var u = mtGetUser();
    if ( u && u.is_authenticated ) return;
    if (mtCaptchaVisible) return;
    var div = document.getElementById('comments-open-captcha');
    if (div) {
        div.innerHTML = '<$mt:CaptchaFields$>';
        mtCaptchaVisible = true;
    }
}

/* Comment Submit *****************************************************************/

<mt:Ignore>
/***
 * Called when comment form is sent.
 * Required parameter: Form DOM object of comment form.
 * If form has a 'bakecookie' member, it will be used to signal
 * storing the anonymous commenter information to a cookie.
 * If form has a 'armor' member, it will be used to store
 * a token that is checked by the comment script.
 */
</mt:Ignore>
<mt:IfBlog>
var mtRequestSubmitted = false;
function mtCommentOnSubmit(f) {
    if (!mtRequestSubmitted) {
        mtRequestSubmitted = true;

        if (f.armor)
            f.armor.value = '<$mt:BlogSitePath encode_sha1="1"$>';
        if (f.bakecookie && f.bakecookie.checked)
            mtSaveUser(f);

        // disable submit buttons
        if (f.preview_button) f.preview_button.disabled = true;
        if (f.post) f.post.disabled = true;

        var u = mtGetUser();
        if ( !is_preview && ( u && u.is_authenticated ) ) {
            // validate session; then submit
            mtFetchedUser = false;
            mtFetchUser('mtCommentSessionVerify');
            return false;
        }

        return true;
    }
    return false;
}

function mtCommentSessionVerify(app_user) {
    var u = mtGetUser();
    var f = document['comments_form'];
    if ( u && app_user && app_user.sid && ( u.sid == app_user.sid ) ) {
        f.submit();
    } else {
        alert('<__trans phrase="Your session has expired. Please sign in again to comment." escape="js">');
        mtClearUser();
        mtFireEvent('usersignin');
<mt:IfRegistrationRequired>
        mtShow('comments-form');
        mtHide('comments-open-footer');
</mt:IfRegistrationRequired>
    }
}
</mt:IfBlog>

/* Utility Functions *****************************************************************/

<mt:Ignore>
/***
 * Simple routine for showing a DOM element (applying a CSS display
 * attribute of 'none').
 */
</mt:Ignore>
function mtHide(id) {
    var el = (typeof id == "string") ? document.getElementById(id) : id;
    if (el) el.style.display = 'none';
}

<mt:Ignore>
/***
 * Simple routine for showing a DOM element (applying a CSS display
 * attribute of 'block').
 */
</mt:Ignore>
function mtShow(id) {
    var el = (typeof id == "string") ? document.getElementById(id) : id;
    if (el) el.style.display = 'block';
}

<mt:Ignore>
/***
 * Calls the event named, if there are handlers for it.
 */
</mt:Ignore>
function mtFireEvent(eventName,param) {
    var fn = window['on' + eventName];
    if (typeof fn == 'function') return fn(param);
    return;
}

function mtFixDate(date) {
    var skew = (new Date(0)).getTime();
    if (skew > 0)
        date.setTime(date.getTime() - skew);
}

<mt:Ignore>
/***
 * Simple function that escapes single quote characters for storing
 * in a cookie.
 */
</mt:Ignore>
function mtEscapeJS(s) {
    s = s.replace(/'/g, "&apos;");
    return s;
}

<mt:Ignore>
/***
 * Simple function that unescapes single quote characters that were
 * stored in a cookie.
 */
</mt:Ignore>
function mtUnescapeJS(s) {
    s = s.replace(/&apos;/g, "'");
    return s;
}

<mt:Ignore>
/***
 * A utility function for assigning/adding handlers to window events.
 */
</mt:Ignore>
function mtAttachEvent(eventName,func) {
    var onEventName = 'on' + eventName;
    var old = window[onEventName];
    if( typeof old != 'function' )
        window[onEventName] = func;
    else {
        window[onEventName] = function( evt ) {
            old( evt );
            return func( evt );
        };
    }
}

/* Ajax Requests *****************************************************************/

<mt:Ignore>
/***
 * Returns a XMLHttpRequest object (for Ajax operations).
 */
</mt:Ignore>
function mtGetXmlHttp() {
    if ( !window.XMLHttpRequest ) {
        window.XMLHttpRequest = function() {
            var types = [
                "Microsoft.XMLHTTP",
                "MSXML2.XMLHTTP.5.0",
                "MSXML2.XMLHTTP.4.0",
                "MSXML2.XMLHTTP.3.0",
                "MSXML2.XMLHTTP"
            ];

            for ( var i = 0; i < types.length; i++ ) {
                try {
                    return new ActiveXObject( types[ i ] );
                } catch( e ) {}
            }

            return undefined;
        };
    }
    if ( window.XMLHttpRequest )
        return new XMLHttpRequest();
}

/* Section *****************************************************************/

<mt:Ignore>
/***
 * Initialize
 */
</mt:Ignore>
// BEGIN: fast browser onload init
// Modifications by David Davis, DWD
// Dean Edwards/Matthias Miller/John Resig
// http://dean.edwards.name/weblog/2006/06/again/?full#comment5338

function mtInit() {
    // quit if this function has already been called
    if (arguments.callee.done) return;

    // flag this function so we don't do the same thing twice
    arguments.callee.done = true;

    // kill the timer
    // DWD - check against window
    if ( window._timer ) clearInterval(window._timer);

    // DWD - fire the window onload now, and replace it
    if ( window.onload && ( window.onload !== window.mtInit ) ) {
        window.onload();
        window.onload = function() {};
    }
}

/* for Mozilla/Opera9 */
if (document.addEventListener) {
    document.addEventListener("DOMContentLoaded", mtInit, false);
}

/* for Internet Explorer */
/*@cc_on @*/
/*@if (@_win32)
document.write("<script id=__ie_onload defer src=javascript:void(0)><\/script>");
var script = document.getElementById("__ie_onload");
script.onreadystatechange = function() {
    if (this.readyState == "complete") {
        mtInit(); // call the onload handler
    }
};
/*@end @*/

/* for Safari */
if (/WebKit/i.test(navigator.userAgent)) { // sniff
    _timer = setInterval(function() {
        if (/loaded|complete/.test(document.readyState)) {
            mtInit(); // call the onload handler
        }
    }, 10);
}

/* for other browsers */
window.onload = mtInit;

// END: fast browser onload init

/* END Movable Type Javascript *****************************************************************/