<h4>Placeholder Text </h4>
 <p>Used to give instructions:
 </p>
 <form action="https://cscie12.dce.harvard.edu/echo" method="post">
   <input size="30" name="search" type="text" placeholder="What can we help you find?"/>

   <input class="searchSubmit" value="Search" type="submit"/>

 </form>
 <hr/>

 <p>Used to show format:
 </p>
 <form action="https://cscie12.dce.harvard.edu/echo" method="post">
   <p>
     <label for="expiration">Expiration:     </label>
     <input id="expiration" name="expiration" type="text" placeholder="MMYY"/>

     <br/>

     <input type="submit"/>

   </p>
 </form>

In style element (<style>) within head element:

input.searchSubmit {
    background: url('./images/magnifier12.png') no-repeat;
    width: 16px;
    height: 16px;
    border: none;
    margin-left: 2px;
    text-indent: -9999em;}