Images doesn't appear

[eluser]Mohammed Zayan[/eluser]
hi there
this is my view code

Code:

<div class="box-container">
    <a href="#" class="div-right mdl-ads">
        <img src="&lt;?php echo base_url(); ?&gt;assets/images/ad-banner.jpg"  alt="" width="473" />
    </a>
    <a href="#" class="div-left mdl-ads">
        <img src="&lt;?php echo base_url(); ?&gt;assets/images/ad-banner.jpg"  alt="" width="473" />
    </a>
</div>

the images path is very correct

this photo from the page source code : http://im28.gulfup.com/Bhzd1.jpg

and this is the image : http://im20.gulfup.com/SLHe1.jpg

the image doesn't appear on firefox or chorme
What should I do???