function supprimerClassName(element)
  {
      element.className = "";
  }
  
  function modifierClassName(element, nomClass)
  {
      element.className = nomClass;
  }
  
  function decompte(IdDiv, secondes)
  {
      var minutes = Math.floor(secondes / 60);
      var secondesAffiche = secondes - (minutes * 60);
      if (secondes > 0)
      {
          document.getElementById(IdDiv).innerHTML = minutes + ":" + secondesAffiche;
          setTimeout("decompte(\"" + IdDiv + "\", " + (secondes-1) + ")", 1000);
      }
      else document.getElementById(IdDiv).innerHTML = "Session interrompue.";
  }

  function capturer(e)
  {
      if (e.which == 3)
      {
          alert("Copie d'image interdite !");
          return false;
      }
  }

  function intercepter()
  {
      if (event.button == 2 && event.srcElement.tagName == "IMG")
      {
          alert("Copie d'image interdite !")
      }
  }

  if (navigator.appName.indexOf("Microsoft") != -1)
  {
      document.onmousedown = intercepter;
  }
  else if (navigator.appName.indexOf("Netscape") != -1)
	    {
      captureEvents (Event.MOUSEDOWN);
      onMouseDown = capturer;
  }
  
  
    var arVersion = navigator.appVersion.split("MSIE");
    var version = parseFloat(arVersion[1]);

	function correctPNG()
	{
		if ((version >= 5.5) && (version < 7))
		{
			for(var i=0; i<document.images.length; i++)
			{
				var img = document.images[i];
				var imgName = img.src.toUpperCase();
				if (imgName.substring(imgName.length-3, imgName.length) == "PNG" && img.name == "transparent")
				{
					var imgID = (img.id) ? "id='" + img.id + "' " : "";
					var imgClass = (img.className) ? "class='" + img.className + "' " : "";
					var imgTitle = "title='" + img.title + "' "; // : "title='" + img.alt + "' "
					var imgStyle = "display:inline-block;" + img.style.cssText;
					if (img.align == "left") imgStyle = "float:left;" + imgStyle;
					if (img.align == "right") imgStyle = "float:right;" + imgStyle;
					if (img.parentElement.href) imgStyle = "cursor:pointer;" + imgStyle;
					var strNewHTML = "<span " + imgID + imgClass + imgTitle
						+ " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
						+ "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
						+ "(src=\'" + img.src + "\', sizingMethod='scale');\" onClick=\"" + img.onClick + "\"></span>";
					img.outerHTML = strNewHTML;
					i = i-1;
				}
			}
		}
	}