function montre_pdf() { 
    if (navigator.appName=='Microsoft Internet Explorer') 
    { 
           document.all.Layer_pdf.style.visibility='visible'; 
                   
    } 
    else 
    { 
           document.getElementById('Layer_pdf').style.visibility='visible';
     
    } 
                 ;} 

// ----------------------------- 

function cache_pdf() { 
    if (navigator.appName=='Microsoft Internet Explorer') 
    { 
           document.all.Layer_pdf.style.visibility='hidden'; 
                   
    } 
    else 
    { 
           document.getElementById('Layer_pdf').style.visibility='hidden';
     
    } 
                 ;}

// -----------------------------				 
function montre_video() { 
    if (navigator.appName=='Microsoft Internet Explorer') 
    { 
           document.all.Layer_video.style.visibility='visible'; 
                   
    } 
    else 
    { 
           document.getElementById('Layer_video').style.visibility='visible';
     
    } 
                 ;} 

// ----------------------------- 

function cache_video() { 
    if (navigator.appName=='Microsoft Internet Explorer') 
    { 
           document.all.Layer_video.style.visibility='hidden'; 
                   
    } 
    else 
    { 
           document.getElementById('Layer_video').style.visibility='hidden';
     
    } 
                 ;}
				 
// -----------------------------				 
function montre_video2() { 
    if (navigator.appName=='Microsoft Internet Explorer') 
    { 
           document.all.Layer_video2.style.visibility='visible'; 
                   
    } 
    else 
    { 
           document.getElementById('Layer_video2').style.visibility='visible';
     
    } 
                 ;} 

// ----------------------------- 

function cache_video2() { 
    if (navigator.appName=='Microsoft Internet Explorer') 
    { 
           document.all.Layer_video2.style.visibility='hidden'; 
                   
    } 
    else 
    { 
           document.getElementById('Layer_video2').style.visibility='hidden';
     
    } 
                 ;}
				 
// -----------------------------				 
function montre_video3() { 
    if (navigator.appName=='Microsoft Internet Explorer') 
    { 
           document.all.Layer_video3.style.visibility='visible'; 
                   
    } 
    else 
    { 
           document.getElementById('Layer_video3').style.visibility='visible';
     
    } 
                 ;} 

// ----------------------------- 

function cache_video3() { 
    if (navigator.appName=='Microsoft Internet Explorer') 
    { 
           document.all.Layer_video3.style.visibility='hidden'; 
                   
    } 
    else 
    { 
           document.getElementById('Layer_video3').style.visibility='hidden';
     
    } 
                 ;}