Problems with the git.calculate repositorie

I was working with repository and when i try to conect with that my connection refuse. I dont have proxy and other thinks.
other of my problemas is when i try to emerge netbeans or eclipse i cant. these told me about a problem.
please help me
thanks

I heard that you removed calculate overlay from your system and that you have only open port 80.

Try this:

sed -ri 's|(url = )git://|\1http://|' /usr/portage/.git/config
cd /var/lib/layman/
git clone http://git.calculate.ru/calculate/overlay.git
mv overlay calculate

3. Create files with this content:
/var/lib/layman/make.conf

PORTDIR_OVERLAY="
/var/lib/layman/calculate
$PORTDIR_OVERLAY
"

/var/lib/layman/installed.xml

<?xml version="1.0" encoding="UTF-8"?>
<repositories version="1.0">
  <repo priority="50" quality="experimental" status="unofficial">
    <name>calculate</name>
    <description>Calculate Overlay</description>
    <homepage>http://www.calculate-linux.org</homepage>
    <owner>
      <email>support@calculate.ru</email>
    </owner>
    <source type="git">http://git.calculate.ru/calculate/overlay.git</source>
  </repo>
</repositories>

4. Then try <> and emerge something.