/**
 * Custom admin logo & remove thank you footer
 */
add_action('admin_head', 'adminLogo');
function adminLogo() { 
    echo '<style type="text/css">
		#header-logo { background-image: url('.get_bloginfo('url').'/LOGOIMAGE.png) !important; }
		#footer-left { display: none; }
    </style>';
}