If the phone numbers on your website are in graphical (bitmap, e.g. JPEG, PNG, GIF) or in Adobe® Flash® format, the Freespee script will not be able to change and track them.
We recommend you to pass on this information to your developer. There are two ways of sorting this out, either you put the phone number in a <span> tag outside the image or embedded Flash file, or in an overlay on the top of the image (see the code example below).
You can use CSS styles to position the number over the image.
<div style="position: relative;"> <img src="image.png"> <span style="position: absolute; top: 0;">0770-35 00 35</span> </div>