On ma kodena;

<style>

berlangganan{position:relative;border:1px solid #ddd;margin:5px auto}

berlangganan-form{height:30px;-moz-border-radius:3px;-khtml-border-radius:3px;-webkit-border-radius:3px;border-radius:3px;background:#fff;overflow:hidden}

berlangganan-text{color:#ccc;border-width:0}

berlangganan input[type="text"]{width:100%;padding:7px 0 7px 7px;outline:0}

berlangganan-button{position:absolute;top:0;right:0;height:30px;margin:0;text-align:center;line-height:0;border-width:0;background:whitesmoke;cursor:pointer;font-size:12px;font-weight:bold}

</style>
<div id='berlangganan'>
<form action=' http://feedburner.google.co m/fb/a/mailverify' id='berlangganan-form' method='get' onsubmit='window.open(&apos; http://feedburner.google.co m/fb/a/mailverify?uri=FEED-ID&apos;, &apos;popupwindow&apos;, &apos;scrollbars=yes,width=550,height=520&apos;);return true' target='popupwindow'>
<input name='uri' type='hidden' value='FEED-ID'/>
<input name='loc' type='hidden' value='en_US'/>
<input id='berlangganan- text' name='email' onblur='if (this.value == &quot;&quot;) {this.value = &quot;Enter your email..&quot;;}' onfocus='if (this.value == &quot;Enter your email...&quot;) {this.value = &quot;&quot;}' type='text' value='Enter your email..'/>
<button id='berlangganan- button' type='submit'>SUBMIT</button>
</form>
</div>