function take_close
load datac1
load datac2
check1
check2
answer=questdlg('close?');
if answer=='Yes'
    check1=0;
    check2=0
    save datac1 check1
    save datac2 check2
    close
end
if answer=='No'
    save datac1 check1
    save datac2 check2
end