Broken Pagination

I’ve been slamming my head against a wall trying to figure this out but can’t seem to get a solution. I have offset defined as 0 but in my pagination links offset+1 for older posts just leads to an error page. Not really sure where I’m going wrong. Any help would be appreciated.

Here is all the code from my page.php file…

<?php

$offset = $_GET['offset'] ? $_GET['offset'] : 0;

$page_title = $wp_query->post->post_title;
$total_posts = wp_count_posts()->publish;

if ( $page_title == "Blog" ) {

?>
<div id="blog_content">
<?php
	if($_GET['message']){
        echo "<div style='background-color:#d9ffd1; padding:10px; margin-bottom:20px;'>".stripslashes($_GET["message"])."</div>";
    }
?>

<?php
    $post_count = 0;

    $args = array( 'numberposts' => 10, 'post_status' => "publish", "offset"=>$offset*10);
    $myposts = get_posts( $args );
    foreach( $myposts as $post ) :	setup_postdata($post); $post_count++; ?>

And then my pagination links

<div style="font-size:12px;">
        <div style="float:left; width:49%;">
        <?php
        the_post();

            if ($offset > 0): ?>
        <a href="<?php the_permalink()?>&offset=<?=$offset-1?>">&larr; Newer Posts</a>
        <?php endif; ?>
        </div>
        <div style="float:right; width:49%; text-align: right;">
        <?php
        $next_post = get_next_post();
        if ($total_posts > $post_count + ($offset*10)): ?>
        <a href="<?php the_permalink()?>&offset=<?=$offset+1?>">Older Posts &rarr;</a>
        <?php endif; ?>
        </div>
        <div style="clear:both;"></div>
    </div>

Thanks in advance for any help anyone can provide