/**
     * Converts a img tag to CSS style
     *
     * @access public
     * @param <type> $img
     * @return string css or empty string
     */
    public function convert_img_to_css( $img ) {
        if ( !is_string( $img ) && false !== stripos( '<img', $img ) ) {
            throw new Exception ( __METHOD__ . ' excpects a string containing a <img /> tag. Recieved a ' . gettype( $img ) );
        }

        /**
         * Match the img
         */
        preg_match( '/<img[^>]+/i', $img, $match );

        if ( sizeof( $match ) === 0 ) {
            throw new Exception ( __METHOD__ . ' first argument did not contain a valid <img /> tag' );
        }


        preg_match_all( '/([a-z]+)="(.*?)"/i', $match[0], $attr );

        $allowed = array(
            'src'       => 'background: url("%s") no-repeat top left;',
            'width'     => 'width: %spx;',
            'height'    => 'height: %spx;',
        );

        $style = '';

        /**
         * Fetch the corresponding HTML tag and add it to the style
         */
        for ( $i = 0; $i < sizeof( $attr[1] ); $i++ ) {
            /**
             * Check if its tags that might be relevant to our conversion
             */

            if ( array_key_exists($attr[1][$i], $allowed) ) {
                printf($allowed[$attr[1][$i]],$attr[2][$i]);
                //$style .= sprintf( $allowed[$attr[1][$i]], $attr[2][$i] );
            }
        }