wp-feedburner-email subscribe

<?php

// call this code in functions.php

// Feed burner Email Subscriber Widget Development

class cb_email_subscribes extends WP_Widget {
	public function __construct() {
		parent::__construct('cb_email_subscribes', 'Email Subscriber', array(
			'description'		=> 'This is Email Subscriber Widget for google feedburner service',
		));

	}
	public function widget($args, $instance){
		if($instance['title']) {
			$title 			= $instance['title'];
		}
		else {
			$title 			= 'Email Subscribe';
		}
		if($instance['email_sub_url']){
			$email_sub_url 	= $instance['email_sub_url'];
		}
		else {
			$email_sub_url 	= 'onlinesolve';

		}
		$email_sub_form		= '<div class="sidebar-email-subscribe-area">
								<form action="https://feedburner.google.com/fb/a/mailverify" method="post" target="popupwindow" onsubmit="window.open(\'https://feedburner.google.com/fb/a/mailverify?uri='.$email_sub_url.'\', \'popupwindow\', \'scrollbars=yes,width=550,height=520\');return true">
									<p>
										<input class="email-subscribe" placeholder="Enter your email address:" type="email" name="email"/>
										<input type="hidden" value="'.$email_sub_url.'" name="uri"/><input type="hidden" name="loc" value="en_US"/><input class="email-subscribe-submit" type="submit" value="Subscribe" />
									</p>
								</form>
								<p class="sidebar-email-sub-total">
									<a href="http://feeds.feedburner.com/'.$email_sub_url.'"><img src="http://feeds.feedburner.com/~fc/'.$email_sub_url.'?bg=99CCFF&amp;fg=444444&amp;anim=1" height="26" width="88" style="border:0" alt="" /></a>
								</p>
							</div>';
		$cb_email_widget_content 	= $args['before_title'].$title.$args['after_title'];
		$cb_email_widget_content 	.= $email_sub_form;

		echo $args['before_widget'].$cb_email_widget_content.$args['after_widget'];

	}
	public function form($instance){
		if($instance['title']) {
			$title 			= $instance['title'];
		}
		else {
			$title 			= 'Email Subscribe';
		}
		if($instance['email_sub_url']){
			$email_sub_url 	= $instance['email_sub_url'];
		}
		else {
			$email_sub_url 	= 'onlinesolve';

		}

		?>
			<p>
				<label for="<?php echo $this->get_field_id('title');?>">Title:</label>
				<input class="widefat" id="<?php echo $this->get_field_id('title');?>" name="<?php echo $this->get_field_name('title');?>" type="text" value="<?php echo $title; ?>"/>
			</p>
			<p>
				<label for="<?php echo $this->get_field_id('email_sub_url');?>">Feed Address:</label>
				<br/>
				<span class="cb_feed_sub_text">Copy and paste your Feedburner feed here.</span>
				<input class="widefat" id="<?php echo $this->get_field_id('email_sub_url');?>" name="<?php echo $this->get_field_name('email_sub_url');?>" type="text" value="<?php echo $email_sub_url; ?>"/>
				<p></p>
				<span class="cb_feed_sub_text">Example: <strong>onlinesolve</strong> <br/> for <a target="_blank" href="http://feeds.feedburner.com/onlinesolve">http://feeds.feedburner.com/onlinesolve</a> feed address.<br/>If you don't have feed url then go to <a href="http://feeds.feedburner.com/" target="_blank">Feedburner</a> and signup</span>
			</p>
		<?php
	}

	public function update($new_instance, $old_instance ){
		$instance = $old_instance;


		$instance['title'] 			= $new_instance['title'];
		$instance['email_sub_url']	= $new_instance['email_sub_url'];
		return $instance;

	}

}
function cb_email_sub_function() {
	register_widget('cb_email_subscribes');
}

add_action('widgets_init', 'cb_email_sub_function');



function cb_email_sub_function_style(){
?>
<style type="text/css">
/*--------------------------------------------------------
Sidebar Email Subscribes
---------------------------------------------------------*/
.sidebar-email-subscribe-area{}
.sidebar-email-subscribe-area form {text-align: center; padding: 3px;margin-bottom: 10px}
input.email-subscribe {border: 1px solid #ddd;
border-radius: 5px;
float: left;
margin-bottom: 5px;
padding: 6px;
width: 65% !important;
}
input.email-subscribe-submit {background: none repeat scroll 0 0 #ddd !important;
border: 1px solid #ddd !important;
border-radius: 5px;
color: #333 !important;
float: left;
font-size: 14px !important;
margin-left: 6px;
margin-top: 0;
padding: 5px !important;cursor: pointer;}
.sidebar-email-sub-total{float: right;
margin-top: 5px;}
.sidebar-email-sub-total a{}
.sidebar-email-sub-total a img{}



</style>
<?php

}
add_action('wp_head', 'cb_email_sub_function_style');
?>