adding post to slider.php in classic theme

hello,
The ‘pages’ in the site call slider.php and are working – sample http://hbicalgary.com/products-2/products/

I have setup a ‘post’ and tried to add images so far no luck. http://hbicalgary.com/customer_commitment/
The slider is there when I view the source but it doesn’t see the image or I’ve called the post wrong not sure which.

In slider.php here is my code for the post

else if (is_single('251')) {
			echo "
			<div class='slideshow'>
			    <div class='slide'><div class='slide_bg' style='background-image: url(\"http://hbicalgary.com/wp-content/uploads/2012/04/April-15-053-1024x7681.jpg\");background-repeat: no-repeat;'></div></div>
			</div>
		  	";
		}

Let me know if I need to provide any other information.

regards,
bijoux26