I have my index set up with two loops. The first loop shows the four latest posts from categories 3, 4, and 5. The second loop shows posts from categories 1 and 3. The problem is that every now and then, a post will show up as the first post in loop 1 which will match the first post in loop 2. In cases like these, I would like the first post in loop 1 to not show. I've attempted this (incorrectly) in my code below with
PHP Code:
$first_post $id == 1
and
PHP Code:
if( $post->ID == $first_post ) continue; 
. If anyone can help me out with this, I would really appreciate it.

PHP Code:
<?php get_header(); ?>

<div id="page">
<div class="content">
   <?php
    $first_post 
$id == 1;
/************************* LOOP 1 Four Posts in a Carousel **********************/
    
query_posts('cat=3,4,5&showposts=4');
    while (
have_posts()) : the_post();
    if( 
$post->ID == $first_post ) continue;
    
$Thumbnail get_post_meta($post->ID'Thumbnail'$single true);
   
?>
            <div id="carousel-post" style="border-right: 1px solid #dddddd; display:inline; float:left; height:170px; margin:0 0 20px 0; padding:5px; width:145px;">
            <center><div class="carousel-thumb"><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><img class="blog-avatar" width="100" height="100" src="<?php echo get_post_meta($post->ID"Thumbnail"true);?>" /></a></div></center>
            <h2 style="font-size:1.3em; margin:5px 0 0 0"><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php if (strlen($post->post_title) > 60) {
            echo 
substr(the_title($before ''$after ''FALSE), 060) . '...'; } else {
            
the_title();
            } 
?></a></h2>
            </div>

    <?php endwhile;
/************************* LOOP 1 Ends **********************/

/************************* LOOP 2 Main Page Posts **********************/
    
query_posts('cat=1,3');
    while (
have_posts()) : the_post();
    
update_post_caches($posts);
    
$Thumbnail get_post_meta($post->ID'Thumbnail'$single true);
?>
            <div class="post" id="post-<?php the_ID(); ?>">
                <h2><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h2>
                <div class="postmetadata" style="border-bottom:1px dotted #888; padding-bottom:10px; padding-top:10px; line-height:18px;">
                <!-- post author -->
                by <?php the_author() ?>
                <!-- the date and time -->
                on <?php the_time(get_option('date_format')) ?>
                <!-- post category
                under <?php the_category(', '?>.-->
                <div id="home-ratings" style="float:right;"><?php if(function_exists('the_ratings')) { the_ratings(); } ?></div>
                </div>

                <div class="entry">
                    <?php if($Thumbnail !== '') { ?>
                    <a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><img src="<?php echo $Thumbnail;?>" width="150" style="border:2px solid #dfdfdf; float:right; margin-left:10px;" /></a>
                    <?php ?>
                    <?php if (function_exists('tweetmeme')) echo tweetmeme(); ?>
                    <?php add_filter('excerpt_length'create_function('','return "75";')); ?>
                    <?php the_excerpt(); ?>
                </div>

                <div class="postmetadata">
                <div style="text-align:right;" class="read-more"><a href="<?php the_permalink(); ?>" title="Read the rest of <?php the_title(); ?>" class="more-link">Read more &raquo;</a></div>
                <?php if( function_exists('the_tags') )
                        
the_tags(__('Tags: '), ', ''<br />');
                
?>
                <?php edit_post_link('Edit'''' | '); ?>  <?php comments_popup_link('No Comments »''1 Comment »''% Comments »'); ?></div>
            </div>
           <?php endwhile;
/************************* LOOP 2 Ends **********************/
           
?>

           <div class="navigation">
            <div style="text-align:left"><?php next_posts_link('&laquo; Older Entries'?></div>
            <div style="text-align:right"><?php previous_posts_link('Newer Entries &raquo;'?></div>
           </div>

</div>
<?php get_sidebar(); ?>
</div>
<?php get_footer(); ?>