UIWebView*_detailWebView=[[UIWebViewalloc]initWithFrame:CGRectMake(0,0, 320, 480)];

_detailWebView.delegate=self;

[_detailWebViewloadRequest:[NSURLRequestrequestWithURL:[NSURLURLWithString:@"http:www.baidu.com"]]];

[_productDetailSVaddSubview:_detailWebView];

-(void)webViewDidFinishLoad:(UIWebView

CGSize actualSize = [_detailWebViewsizeThatFits:CGSizeZero];

CGRect newFrame = _detailWebView.frame;

    newFrame.size.height = actualSize.height;

_detailWebView.frame = newFrame;

_productDetailSV.contentSize=CGSizeMake(320,480);

}