// funcion pop-up window

  function pop_window() {
  
    window.open('video1.html', 'popup', 'width=450, height=380, top=100, left=100, menubar=0, scrollbars=0, location=0, toolbar=0,  resizable=1, status=0');
    
}
  function pop_windows() {
  
    window.open('graph.html', 'popup', 'width=500, height=500, top=100, left=100, menubar=0, scrollbars=0, location=0, toolbar=0,  resizable=0, status=0');
    
}
  function pop_window1() {
  
    window.open('afiche.html', 'popup', 'width=500, height=525, top=100, left=100, menubar=0, scrollbars=0, location=0, toolbar=0,  resizable=0, status=0');
    
}

// funcion pop-up window fin