<a> tag with OnClick()...

I want to add an OnClick event to the following line:

<a id="A4c" href="./Videos.html#UploadVideo" ><abbr title="watch demo video.">Data Upload</abbr></a>

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It is supposed to show a message also navigate to href="./Videos.html#UploadVideo".

But this cannot be like alert box because it may mess up navigation.

Question: How can I incorporate something like toast (Demo:http://codeseven.github.io/toastr/demo.html) with this tag?

BTW, when I try something like:

<a id="A4c" href="./Videos.html#UploadVideo" onclcik="showSomething()"><abbr title="watch demo video.">Data Upload</abbr></a>

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Understandably, it doesn't work I guess because <a> doesn't function like button on a form. So, how one fire from <a> or basically perform what has been described above?