Answer 1

You have to be More Specific.
But, in generalist-terms, I assume that it's Facebook Style?

So. Let's review the code that you'll need...

HTML:
<div class="AverageContainer">
<button id="ThumbUpSymbol" onclick="ClickLike()">
<p id="Some Other Id I Can't Think Of - Offset To The Side">
Like!
</p>
</button>
</div>

CSS:
.AverageContainer {
height: 50 px;
width: 80 px;
position: absolute;
background-color: #FFF;
color: #FFF;
}
#ThumbUpSymbol {
height: 25 px;
width: 25 px;
position: relative;
content:url("https://wikimedia.org/wikipedia/commons/thumb/up/like.svg.jpeg");
}
/* Note, the address used above is for example only, and will not give an actual image or website. */

JS:
function ClickLike() {
alert("You Liked " + CurrentViewedImage or CurrentViewedText + "!")
// Send a Query to the Web-Server

Output:

A 'decent-looking' facebook-cloned "Like!" button.
But, meh, it'll do. ;)

This was the best I could think of, I'm interested as to what others will say on this.
Best wishes, Happy New Year!