Assertion:
Opera 3.5-3.6x has a problem laying out form fields on the same line as INPUT IMAGE fields... fields on the same line BEFORE the image are top aligned with the top of the image, and fields on the same line AFTER the image are bottom aligned with the bottom of the image. This behavior is fixed in Opera 4. (If the fields are RADIO or IMAGE, they seem to be immune to this effect.)

Form 1, Simple INPUT type=image element, all form widgets before AND after:
text text

Form 2, Simple INPUT type=image element, all form widgets before AND after:
text text