Here's the dirtiest way :)

<a href=.. onclick='sayHello();alert(say hello again);sayGoodMorning()'>.</a>

Here's a somewhat saner version. Wrap everything into a function:

<a href=.. onclick=sayItAll()>..</a>

JavaScript:

function sayItAll() {

    sayHello();

    alert(say hello again);

    sayGoodMorning();

}

And here's the proper way to do it. Use the event registration model instead of relying on the onclick attribute or property.

<a id=linkId href=...>some link</a>

JavaScript:

var link = document.getElementById(linkId);

addEvent(link, click, sayHello);

addEvent(link, click, function() {

    alert(say hello again);

});

addEvent(link, click, sayGoodMorning);

A cross-browser implementation of the addEvent function is given below (from scottandrew.com):

function addEvent(obj, evType, fn) {

    if (obj.addEventListener) {

        obj.addEventListener(evType, fn, false);

        return true;

    } else if (obj.attachEvent) {

        var r = obj.attachEvent(on + evType, fn);

        return r;

    } else {

        alert(Handler could not be attached);

    }

}

Note that if all 3 actions must be run sequentially, then you should still go ahead and wrap them in a single function. But this approach still tops the second approach, although it seems a little verbose.

var link = document.getElementById(linkId);

addEvent(link, click, function() {

    sayHello();

    alert(say hello again);

    sayGoodMorning();

});