Thanks,
for help, it worked.

Regards

Hi
image No. 1 shows the effect of glass menu but part of it is with a white background and I wanted to improve was also glass, give it a degree of transparency.
2 In the picture you can see the same menu after you go down the page automatically comes with white background and there is ok to want to let that way.

image 1
https://drive.google.com/file/d/0B-n74HnWfeYCVUE2UGg1ZkpJV1U/view?usp=sharing
image 2
https://drive.google.com/file/d/0B-n74HnWfeYCVkEzR1pwRjV5UHM/view?usp=sharing