The screen flickers and distorts when a css hover/mouseover is activated on a terminal client.
The stylesheet which changes the colour of the background is what seems to be causing the problem, the code for it is as follows:

<style type="text/css">
.normal {background-color:#FFFFFF; cursor:default;}
.highlight {background-color:#F2F3F7;}
.smartlink {color:#091c5a; text-decoration:none;}

Is there a known problem with using a terminal server and this particular stylesheet effect?