function imageA()
 {
 var im1= document.getElementById("imageA");
 var im2= document.getElementById("imageB");
 var im3= document.getElementById("imageC");
 var im4= document.getElementById("div1");
 var im5= document.getElementById("div2");
 var im6= document.getElementById("div3");
 
 im1.style.display="block";
 im2.style.display="none";
 im3.style.display="none";
 im4.style.backgroundImage="url(News/news-surligne.png)";
 im5.style.backgroundImage="none";
 im6.style.backgroundImage="none";
 }
 
  function imageB()
  {
  var im1= document.getElementById("imageA");
 var im2= document.getElementById("imageB");
 var im3= document.getElementById("imageC");
 var im4= document.getElementById("div1");
 var im5= document.getElementById("div2");
 var im6= document.getElementById("div3");
 
 im1.style.display="none";
 im2.style.display="block";
 im3.style.display="none";
 im4.style.backgroundImage="none";
 im5.style.backgroundImage="url(News/news-surligne.png)";
 im6.style.backgroundImage="none";
  }
  
   function imageC()
   {
   var im1= document.getElementById("imageA");
 var im2= document.getElementById("imageB");
 var im3= document.getElementById("imageC");
 var im4= document.getElementById("div1");
 var im5= document.getElementById("div2");
 var im6= document.getElementById("div3");
 
 im1.style.display="none";
 im2.style.display="none";
 im3.style.display="block";
 im4.style.backgroundImage="none";
 im5.style.backgroundImage="none";
 im6.style.backgroundImage="url(News/news-surligne.png)";
   }