Ads list not showing up in PHP

[Evjicvtjw]

i am creating a website using PHP and mysql...in my code, there is a list containing the images for Ads...The problem is that those images do not show up if i use in the code in php i.e. if my page is index.php and i run through wamp, but if i put the code in a simple html page like index.html, the images for ads show up....i fire bug it and found that in index.php, that ul containing ads is somehow hide...i dont know why is this behavior...Need you guidance...Check out the screen shotsFor index.phphttp://zahms.com/awais/image1.pngFor index.htmlhttp://zahms.com/awais/image2.pngNote that there is some strange class which is being assigned to the li tag in index.php but that is not in my actual code..here is my code for that list....it is the same for both index.php and index.html\[code\]<ul class="Ads"><li><img src="http://stackoverflow.com/questions/15849300/images/Ad.png" alt="ad1" /></li><li><img src="http://stackoverflow.com/questions/15849300/images/Ad.png" alt="ad2" /></li></ul>\[/code\]