Ovo i nije toliko pitanje za javu, više je za html/css.
Imaš dvije varijante, koristi html form tag i te svoje parametre definiši kao imput field.
Druga varijant je da radiš sve kao i do sada samo da koristiš css da tvoj link izgleda kao dugme. Evo guglanjem naletio sam na ovaj link:
http://www.cssbuttongenerator.com/
Dodaj ovo na pocetak unutar head tag-a:
Code:
<style type="text/css">
.dugme {
-moz-box-shadow:inset 0px 1px 0px 0px #ffffff;
-webkit-box-shadow:inset 0px 1px 0px 0px #ffffff;
box-shadow:inset 0px 1px 0px 0px #ffffff;
background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #ededed), color-stop(1, #dfdfdf) );
background:-moz-linear-gradient( center top, #ededed 5%, #dfdfdf 100% );
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ededed', endColorstr='#dfdfdf');
background-color:#ededed;
-webkit-border-top-left-radius:20px;
-moz-border-radius-topleft:20px;
border-top-left-radius:20px;
-webkit-border-top-right-radius:20px;
-moz-border-radius-topright:20px;
border-top-right-radius:20px;
-webkit-border-bottom-right-radius:20px;
-moz-border-radius-bottomright:20px;
border-bottom-right-radius:20px;
-webkit-border-bottom-left-radius:20px;
-moz-border-radius-bottomleft:20px;
border-bottom-left-radius:20px;
text-indent:0;
border:1px solid #dcdcdc;
display:inline-block;
color:#777777;
font-family:Arial;
font-size:15px;
font-weight:bold;
font-style:normal;
height:65px;
line-height:65px;
width:131px;
text-decoration:none;
text-align:center;
text-shadow:1px 1px 0px #ffffff;
}
.dugme:hover {
background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #dfdfdf), color-stop(1, #ededed) );
background:-moz-linear-gradient( center top, #dfdfdf 5%, #ededed 100% );
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#dfdfdf', endColorstr='#ededed');
background-color:#dfdfdf;
}.dugme:active {
position:relative;
top:1px;
}</style>
/* This button was generated using CSSButtonGenerator.com */
A u a tag dodaj atribut class="dugme"