Selecting posts from Featured category

$featurePosts = new WP_Query('showposts=3&cat=1711');
if ($featurePosts->have_posts()) {
	$strString = "<div class='featured'>";
	while ($featurePosts->have_posts()) : $featurePosts->the_post() ;
		$strString .= "<div class='featured-post'>";
		if ( has_post_thumbnail() ) {
			$imgattr = array(
			'class'	=> "attachment-thumbnail",
			'alt'	=> trim(strip_tags( get_the_title() )),
			'title'	=> trim(strip_tags( get_the_title() )),
			);
    		$strString .= '<a href="'. get_permalink().'" title="'. get_the_title() .'">' . get_the_post_thumbnail(get_the_ID(),'feature-thumb') . '</a>';
		}
		$strString .= '<p><a href="'. get_permalink().'" title="'. get_the_title() .'">'.get_the_title().'</a></p>';
		$strString .= "</div>";
	endwhile;
	$strString .= "</div>";
}
return $strString;