It appears that the dropdown control resizes when hovering over the control. My users are complaining about this. This is the default behavoir of the control. Is there a fix for this. I have been looking at the styles as a means to curb this problem but to no avail.
There is difference in the size og the images used on the dropdown I overcome from this problem by deleting the igdd_dropdownbuttonHover image and copy the igdd_dropdownButton image with the igdd_DropDownButtonHover.
This does the trick for me.
Thanks ashpawan,
the same worked for me!