3 columns post

im using this code to make 2 columns post
and i want to make this 3 columns..can anyone help me?

<div class="container">

			 		<?php $col = 1; ?>
                    <?php if (have_posts()) : while (have_posts()) : the_post(); ?>
                    <?php if ($col == 1) echo "<div class=\"row\">"; ?>

                    <div class="post_col<?php echo $col;?>" id="post-<?php the_ID(); ?>">
                    <b class="rtop"><b class="r1"></b> <b class="r2"></b> <b class="r3"></b> <b class="r4"></b></b>
                        	<div id="storythumb">
                            	<img src="<?php echo p75GetThumbnail($post->ID, 310, 250); ?>" />
                            </div>
                            <div id="storytitle">
                                <span class="h5"><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title(); ?>"><?php the_title(); ?></a></span>
                            </div>
                            <div class="storycontent">
                                <?php the_excerpt('&raquo; &raquo; &raquo; &raquo;'); ?>
                            </div>
                            <div class="h3">
                                <?php the_category(); ?>
                            </div>
                            <div class="h2">
								<?php the_time('Y') ?>
                            </div>
                    <b class="rbottom"><b class="r4"></b> <b class="r3"></b> <b class="r2"></b> <b class="r1"></b></b>
                    </div>
                    <?php if ($col == 1) echo "</div>"; (($col==1) ? $col=2 : $col=1); endwhile; ?>

                    <p class="pre_en" align="center"><?php if(function_exists('wp_pagenavi')) { wp_pagenavi(); } ?></p>
                    <?php else : ?>
                    <h2 align="center">Not Found</h2>
                    <p align="center">Sorry, but you are looking for something that isn't here.</p>
                    <?php endif; ?>
	</div>

thanks before..
any help would be great