<!--
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->

  function alertSize() {
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  /*
  window.alert( 'Width = ' + myWidth );
  window.alert( 'Height = ' + myHeight );
  */
  return Array(myWidth,myHeight);
}
  function resizeImg(){
    tab=alertSize();
    //alert(tab)
    //calcul de la nouvelle taille de l'image
    tab[0]=(tab[0]<902)?902:tab[0];
    /*
    heightmax=(document.getElementById('blockcentral')==null)?620:1000;
    alert(document.getElementById('content').clientHeight);
    */
    heightmax=document.getElementById('content').clientHeight+40;
    if(tab[1]<heightmax){
      tab[1]=heightmax;
      coeff=tab[1]/hauteurimg;
    }else{
      coeff=tab[0]/largeurimg;
    }
    /*tab[0]=(tab[0]<902)?902:tab[0];*/
    coeff=tab[0]/largeurimg;
    if(hauteurimg*coeff>tab[1]){
      document.getElementById('imgfond').width=tab[0];
      document.getElementById('imgfond').height=(hauteurimg*coeff);
    }else{
      document.getElementById('imgfond').width=(largeurimg*coeff);
      document.getElementById('imgfond').height=tab[1];
    }
    document.getElementById('fond').style.width=tab[0]+"px";
    document.getElementById('fond').style.height=tab[1]+"px";
  }
  function startimg(){
    resizeImg();
    document.getElementById('fond').style.display="block";
  }
 

 onload=startimg
  onresize=resizeImg