On of the side links points to
Downloading that file using wget results in:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<title>Online LICENSED drugstore ::: Levitra indian price | EXTRA LOW PRICES!
<meta name='description' lang='en' content='Levitra indian price ::: We sale
brand and generic drugs. In our pharmacy: US FDA Approved
So unless you put that up there, your server is compromised.
Note that common malware does a number of tricks in order to stay undiscovered. For example it may check the Referer-header, only send the malicious content to a client ip-address onces, check the browser user agent header, etc.
Furthermore it may be hidden in a number of places. For example in the 404 error handler. It might even be possible that the attacker got root permissions and manipulated the webserver software.
You need to get help from someone with experience to identify the vulnerability that was exploited. Then you need to setup the server from scratch.
The server might spread malware to visitors or send email spam. So in order to protect your visitors, third parties from attacks and yourself from legal actions, you should take the server offline.