The following codes will place a link or button in-line with your description, using java script to place the button outside of the description area is no longer allowed by IMVU !!
Text link –
<a href="imvu:PeerReview?mcg=0&pid=PRODUCT_NUMBER_GOES_HERE">TRY IT !!</a>
Image link –
<a href="imvu:PeerReview?mcg=0&pid=PRODUCT_NUMBER_GOES_HERE"><img src="PIC_URL_GOES_HERE" alt="Try it now !!" border="0"></a>
The url to the imvu try it button pic is –
(You decide if it is acceptable to use it or make your own.)
Here are sample text link to one of my products –