Code review: Cross site scripting DOM load event, could this be cleaner?

Question

Source on Github: http://github.com/tschellenbach/Fashiolista-Button/blob/master/buttons.js

Blog post explaining the code http://www.mellowmorning.com/2010/08/03/creating-your-own-diggfacebook-liketweetmeme-button/

The current dom load version is rather verbose.

I need the domload event because the code detects all a[href] elements in the page. prior to domload these elements are not always available (depending on your browser).

Does anyone know a more elegant version or a way to avoid the need for the domload event?

Ready method:

ready: function() {
    // Make sure that the DOM is not already loaded
    if ( !fashiolistaUtils.isReady ) {
        // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
        if ( !document.body ) {
            return setTimeout( fashiolistaUtils.ready, 13 );
        }

        // Remember that the DOM is ready
        fashiolistaUtils.isReady = true;

        //start the fun
        try {
            fashiolista = new fashiolistaClass();
        } catch(e) {
            //we dont break other peoples code
        }
    }
},

BindReady method:

bindReady: function() {
    if ( fashiolistaUtils.readyBound ) {
        return;
    }

    fashiolistaUtils.readyBound = true;

    // Catch cases where $(document).ready() is called after the
    // browser event has already occurred.
    if ( document.readyState === "complete" ) {
        return fashiolistaUtils.ready();
    }

    // Mozilla, Opera and webkit nightlies currently support this event
    if ( document.addEventListener ) {
        // Use the handy event callback
        document.addEventListener( "DOMContentLoaded", FashiolistaDOMContentLoaded, false );

        // A fallback to window.onload, that will always work
        window.addEventListener( "load", fashiolistaUtils.ready, false );

    // If IE event model is used
    } else if ( document.attachEvent ) {
        // ensure firing before onload,
        // maybe late but safe also for iframes
        document.attachEvent("onreadystatechange", FashiolistaDOMContentLoaded);

        // A fallback to window.onload, that will always work
        window.attachEvent( "onload", jQuery.ready );

        // If IE and not a frame
        // continually check to see if the document is ready
        var toplevel = false;

        try {
            toplevel = window.frameElement == null;
        } catch(e) {}

        if ( document.documentElement.doScroll && toplevel ) {
            doScrollCheck();
        }
    }

DomcontentLoaded and DoScrollCheck:

//
//Simulate an ondomload as well as we can without a framework
//Taken from jquery
//

// Cleanup functions for the document ready method
if ( document.addEventListener ) {
    FashiolistaDOMContentLoaded = function() {
        document.removeEventListener( "DOMContentLoaded", FashiolistaDOMContentLoaded, false );
        fashiolistaUtils.ready();
    };

} else if ( document.attachEvent ) {
    FashiolistaDOMContentLoaded = function() {
        // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
        if ( document.readyState === "complete" ) {
            document.detachEvent( "onreadystatechange", FashiolistaDOMContentLoaded );
            fashiolistaUtils.ready();
        }
    };
}

// The DOM ready check for Internet Explorer
function FashiolistaDoScrollCheck() {
    if ( fashiolistaUtils.isReady ) {
        return;
    }

    try {
        // If IE is used, use the trick by Diego Perini
        // http://javascript.nwbox.com/IEContentLoaded/
        document.documentElement.doScroll("left");
    } catch( error ) {
        setTimeout( FashiolistaDoScrollCheck, 1 );
        return;
    }

    // and execute any waiting functions
    fashiolistaUtils.ready();
}
fashiolistaUtils.bindReady();