How to Change the AlertView backround

       

       UIImage *theImage = [UIImage imageNamed:@"alert.png"];    

       theImage = [theImage stretchableImageWithLeftCapWidth:16 topCapHeight:16];

        CGSize theSize = [deletealert frame].size;

        

        UIGraphicsBeginImageContext(theSize);    

        [theImage drawInRect:CGRectMake(0, 0, theSize.width, theSize.height)];    

        theImage = UIGraphicsGetImageFromCurrentImageContext();    

        UIGraphicsEndImageContext();

        

        [[deletealert layer] setContents:[theImage CGImage]];

        [deletealert release];