Image 1: no height, width, or style
Image 2: height="30", width="500", but no style
Image 3: no height, width, but style="height: 50px; width: 50px;"
- image1: height=16, width=16, style.height=, style.width=
- image2: height=30, width=500, style.height=, style.width=
- image3: height=50, width=50, style.height=50px, style.width=50px