<div class="cancel">
    <a href="#" id='cancel_btn' name=''><img src="../images/img_trans.gif"></a>
</div>

<div class="save_and_new">
    <a href="#" id='save_and_new_btn' name=''><img src="../images/img_trans.gif"></a>
</div>

<div class="save_and_quit">
    <a href="#" id='save_and_quit_btn' name=''><img src="../images/img_trans.gif"></a>
</div>

if(isset(......)){

}

<input type="image src="/your/button/image/here.gif" />

<button name="button" value="action1"><img src="/your/image/here.gif" alt="action 1" /></button>
<button name="button" value="action2"><img src="/your/image/here.gif" alt="action 2" /></button>

$("#save_and_new_btn").click(function() {

     $("#form").submit();

});

document.forms["myform"].submit();

<form id='myform' action='formmail.pl'>

<form name="myform" action="handle-data.php">
Search: <input type='text' name='query' />
<a href="javascript: submitform()">Search</a>
</form>
<script type="text/javascript">
function submitform()
{
  document.myform.submit();
}
</script>

if(isset($_POST['signin'])){

    $user=$_POST['user'];
    $pass=$_POST['pass'];

    include("../admin/includes/connect.php");

    $query = mysql_query ("select * from registered_users WHERE username='".$user."' AND password='".$pass."'");

    $numrows = mysql_num_rows($query);

    if($numrows == 1){

        header('Location:C:xampphtdocsmagzreguser.html');
    }
}
    ?>
but it is not working properly help me..