This works fine on my Home page.
However, when I copied and pasted, or inserted the same table as a snippet, I had a persisting problem:
image 1 is visible, but as soon as I hover over it, the image disappears completely.
In this attachment, the images I have hovered over have now disappeared and won't reappear until I refresh the page.
The image that is visible has not yet been hovered over.
Thinking that the hover only wants to work on my Home page, I did a test, making a copy of my Home page but the problem happened in the copied page too.
What is going on please

PS:The hover functionality I've used was kindly given to me on this thread https://forums.madcapsoftware.com/viewtopic.php?f=6&t=33141
In Text Editor the hover set up looks like this:
<p>
<a href="../q_systembasics/systembasicshome.htm" title="System basics"><img src="4.howtousehelp_images/mod_ba.png" onmouseover="this.src='4.helptopics/s_howtousehelp/4.howtousehelp_images/mod_ba_hover.png'"
onmouseout="this.src='4.helptopics/s_howtousehelp/4.howtousehelp_images/mod_ba.png'" /><
/a>
</p>