Html Button Value Image. This places an image button within the html form which can be referenced by using its name imgbtn with a alt text tool tip. It cannot be clicked and usually appears gray.

The required button is selected using the respective css selector. This places an image button within the html form which can be referenced by using its name imgbtn with a alt text tool tip. Button accesskey defines an keyboard shortcut for the button.
The input type image defines an image as a submit button.
This places an image button within the html form which can be referenced by using its name imgbtn with a alt text tool tip. The border of the button can also be removed to show only the image itself. When you specify image for the type attribute of this element an image submit button is created. If you use the button element in an html form internet explorer prior version 8 will submit the text between the button and button tags while the other browsers will submit the content of the value attribute.