For opening a Web Link/URL from an iPhone application, follow the two simple steps.
Step 1 :
Create an NSURL object and initialize it with your URL string
NSURL *myURL = [NSURL URLWithString:@"http://www.coderzheaven.com/"];
Step 2 :
Use the openURL method by passing your NSURL object
[[UIApplication sharedApplication] openURL: myURL];