<input type="submit" name="submit" src="images/stack.png" />

<input type="image" id="myimage" src="[...]" />

#myimage {
    height: 200px;
    width: 200px;
}

<input type="image" id="myimage" style="height:200px;width:200px;" src="[...]" />

<button type="submit"><img src="/path/to/image" alt="Submit"></button>

<input type="submit" name="submit" style="background: url(images/stack.png); width:100px; height:25px;" />

<input type="button" value="text" name="text" onClick="{action}; return false" class="fwm_button">

.fwm_button {
   color: white;
   font-weight: bold;
   background-color: #6699cc;
   border: 2px outset;
   border-top-color: #aaccff;
   border-left-color: #aaccff;
   border-right-color: #003366;
   border-bottom-color: #003366;
 }

<input type="image" src="/library/graphics/cecb2.gif">

<input type= "image" id=" " onclick=" " src=" " />

<a href="#">
        <img src="p.png"></img>
    </a>