Mailchimp integration

Hi, i want to put a mailchimp form in the sidebar,

i want to use this code “<!– Begin MailChimp Signup Form –>

<div id="optin">
<form action="https://xxxus6.list-manage2.com/subscribe/post?u=b83d4f339e17010fd4336068f&id=d35f80de56" method="post" id="mc-embedded-subscribe-form" name="mc-embedded-subscribe-form" class="validate" target="_blank" novalidate>
	<h2>Aboneaza-te pentru a primi articolele noi</h2> <br />
<div class="mc-field-group">
	<input class="name" type="text" value="Prenume" size="20" name="FNAME" id="mce-FNAME" onfocus="if(this.value==this.defaultValue)this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;">
</div>
<div class="mc-field-group">
	<input class="email" type="email" value="Adresa de mail" size="20" name="EMAIL" id="mce-EMAIL" onfocus="if(this.value==this.defaultValue)this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;">
</div>
	<div id="mce-responses" class="clear">
		<div class="response" id="mce-error-response" style="display:none"></div>
		<div class="response" id="mce-success-response" style="display:none"></div>
	</div>	<div class="clear">
<div class="buton">
<input type="submit" value="Ma abonez" name="subscribe" id="mc-embedded-subscribe" class="button"></div></div>
</form>
</div>

“

and in css i have

#optin { background: #fff url(images/shadow.png) repeat-x top; border: 3px solid #efefef; padding: 20px 15px; text-align: center }
#optin input {
		border: 1px solid #ccc;
		font-size: 15px;
		margin-bottom: 10px;
		padding: 8px 10px;
		border-radius: 3px;
		-moz-border-radius: 3px;
		-webkit-border-radius: 3px;
		box-shadow: 0 2px 2px #ddd;
		-moz-box-shadow: 0 2px 2px #ddd;
		-webkit-box-shadow: 0 2px 2px #ddd
	}
#optin input.email { background: #fff url(images/email.png) no-repeat 10px center; padding-left: 35px;  }
#optin input.name { background: #fff url(images/name.png) no-repeat 10px center; padding-left: 35px; width: 175px;}
#buton input[type="submit"] {
			background: #f6640e url(images/orange.png) repeat-x top;
			border: 1px solid #a44913;
			color: #fff;
			cursor: pointer;
			font-size: 18px;
			font-weight: bold;
			padding: 8px 0;
			text-shadow: -1px -1px #562806;
			width: 100%
		}
#optin input[type="submit"]:hover { color: #ffdeb3 }

But i dont know why my submit button doesnt want so show up! can you help me?