A little query help please.

Argh, me and PHP. Could somebody give me a hand?

I’m querying a custom post type in a widget using the following query:

<?php
    query_posts(array(
        'post_type' => 'blog',
        'showposts' => 10
    ) );
?>
<?php while (have_posts()) : the_post(); ?>
        <P STYLE="font-size: 14px; font-weight: bold;"><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></font>
<p><?php echo get_the_content(); ?></p>
<?php endwhile;?>

So far so good, were it not that I crop the content using the more tag and that does not work on single posts and pages. So I figured I’d just add a little if-statement, but it doesn’t do the trick.

I’ve got this:

<?php
    query_posts(array(
        'post_type' => 'blog',
        'showposts' => 10
    ) );
?>
<?php while (have_posts()) : the_post(); ?>
        <P STYLE="font-size: 14px; font-weight: bold;"><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></font>
<p><?php if ( is_single() ) {
	echo get_the_excerpt();
} else {
	echo get_the_content();
} ?></p>
<?php endwhile;?>

I have tried a few variations, like without the echo_get, but the result remains the same: full blog-posts on single posts.

Any help is appreciated.