Not sure how to code your button, follow the steps below and you will:

Step 1:: Copy and paste the code below to wherever you want it to show:
<img src="URL OF BUTTON HERE" border="0"> <br><textarea><a href="SITE URL HERE" target="_blank"> <img src="URL OF BUTTON HERE" border="0"></a></textarea>
Step 2:: Replace 'URL OF BUTTON HERE' with the url of your button. Note: There is two places to put the url of your button at.

Step 3:: Replace 'SITE URL HERE' with your site's url.

This code gives other people the chance to be able to link you as well.

If this helped, a link back is required.