<!--
function changeURL(sender) {
  if (sender.length > 0) {
    if (sender=='btn1')  // About
        window.location.href='about.html';  
    else if (sender=='btn2') // History 
        window.location.href='history.html';  
    else if (sender=='btn3') // Executive search 
        window.location.href='pynes.html';
    else if (sender=='btn4') // PYN Select
        window.location.href='select.html';  
    else if (sender=='btn5') // National job
      window.open('http://hh.ru/employer/14');
    else if (sender=='btn6') // Principles
        window.location.href='princip.html';  
    else if (sender=='btn7') // Current openings
      window.location.href='current.html';
    else if (sender=='btn8') // Home
      window.location.href='index.html';  
  }           
}
//-->