Capture.JPG
I couldn't get the toggleButton to handle getImage so I used two buttons and getVisible to hide/unhide
<?xml version="1.0" encoding="utf-8"?>
<customUI xmlns="http://schemas.microsoft.com/office/2009/07/customui" onLoad="OnLoad">
<ribbon startFromScratch="false">
<tabs>
<tab idMso="TabHome">
<group id="grpSQ" insertAfterMso = "GroupFont">
<button id="btnSQ"
size="large"
label="Straight Quotes"
onAction="btnAction"
image = "imgRQ"
getVisible = "btnVisible"
screentip="Turn on Straight Quotes"/>
<button id="btnRQ"
size="large"
label="Smart Quotes"
onAction="btnAction"
image="imgSQ"
getVisible = "btnVisible"
screentip="Turn on Smart Quotes"/>
</group>
</tab>
</tabs>
</ribbon>
</customUI>