Show/Hide buttons

So here is Show/Hide buttons. Those buttons have very simple purpose. As you know you can have POP3, WEB checkers or WEB-POP3 gates in list. (If you didn't read this you then you can read it here.) If you have big list you can hide some not necessary for you information. Buttons hide group if it visible in list or show group if it is invisible.
show or hide group of POP3 checkers in list
show or hide group of WEB checkers in list
show or hide group of WEB-POP3 gates in list
Same function you can find in program menu. They are named
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