Image problems

Hello, I am hoping someone can help me out. I have a problem with my header image. On mozilla firefox my header image can be seen perfectly clearly however, on IE and Chrome my image cannot be viewed. I have copyed and pasted my php header below: My knowledge of php is lacking so if somebody can guide me and resolve this problem I would really appreciate it thank you.

<div class=”inner”>

<?php if( $nest_options[‘logo_url’] ) : ?>
<h1 class=”site-logo”>/”><img src=”<?php echo $nest_options[‘logo_url’]; ?>” alt=”<?php bloginfo( ‘name’ ) ?>” title=”<?php bloginfo( ‘name’ ) ?> – <?php bloginfo( ‘description’ );?>” /></h1>
<?php else : ?>
<h1 class=”site-title”>/”><?php bloginfo( ‘name’ ) ?></h1>
<p class=”site-description”><?php bloginfo( ‘description’ );?></p>
<?php endif; ?>

<div class=”clearfix”></div>

</div><!– .inner –>

<div class=”clearfix”></div>
wever, on IE and chrome my image cannot be viewed.