does file exist?

function wp_utterquotes_spew($quote, $encloseDiv='class="wp_utterquotes"', $quoteDiv='wp_utterquotes_quote', $authorDiv='wp_utterquotes_author'){	?>  <div <?php echo $encloseDiv; ?>>    <div class="<?php echo $quoteDiv?>"><?php echo nl2br($quote->quote); ?></div>    <?php	$ext = ".gif";        $who = $quote->author;        $who1 = str_replace(".","",$who);	$who1 = str_replace(" ","",$who1);	$imgfile = " ";        $imgfile = get_settings('siteurl').'/wp-content/plugins/wp-utterquotes/images/'.$who1.$ext;        $who = str_replace($who1, '<img src="'.$imgfile.'" alt="" class="imgright" /> ', $who1);    ?>    <?php if ( !empty($quote->author) ) { ?>		<div class="<?php echo $authorDiv?>"><?php echo $who.$quote->author;?></div>    <?php } ?>  </div><?php}