function correctPngPictures() // correctly handle PNG transparency in Win IE 5.5 or higher.
{
   	if ( document.all )//propriété qui n'existe que sous IE (l'affichage est bon sous FF)
	{
		//console.log('___>> begin correctPngPictures');
		
		for(var i=0; i<document.images.length; i++)//on parcours toutes les images de la page
      	{
		   	var img = document.images[i];
		   	var imgName = img.src.toUpperCase();
		   
			//console.log('imgName : %d', imgName);
			
		 	if (imgName.substring(imgName.length-3, imgName.length) == "PNG" )// si l'image est un png
		  	{
				var imgID = (img.id) ? "id='" + img.id + "' " : "";
				var imgClass = (img.className) ? "class='" + img.className + "' " : "";
				var imgTitle = (img.title) ? "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:hand;" + 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');\"></span>" ; 
				img.outerHTML = strNewHTML; // déprécié, ne plus utiliser.
				//img.innerHTML = strNewHTML; // cause un bug, à corriger.
				
				i = i-1;
				
				//console.log('innerhtml : %d', strNewHTML);
			   
		  	} // end if

      	} // end for
	 } // end if
}


function correctPngBackground() <!-- Balise background -->
{
	if ( document.all )
	{
		//console.log('___>> begin correctPngBackground');
		
		var images_list = document.getElementsByTagName( '*' );
				
		for ( var i = 0 ; i < images_list.length; i++ )
		{				
			var imgName = images_list[ i ].currentStyle.backgroundImage.replace( /url[s]*()+/, '' );
			imgName     = imgName.replace( /(")+/g, '' );
			imgName     = imgName.substr( 1, imgName.length - 1 );
			imgName     = imgName.substr( 0, imgName.length - 1 );
						
			if ( imgName.substring( imgName.length - 3, imgName.length ) == 'png' )
			{
				images_list[ i ].runtimeStyle.backgroundImage = "url( 'images/empty.gif' )";
				images_list[ i ].runtimeStyle.filter          = "progid:DXImageTransform.Microsoft.AlphaImageLoader( src='" + imgName + "', sizingMethod='scale' )";
			}
		}
	}
		
	return true;
}


function enablePngUnderIE( comefrom )
{
	//console.log('___>> enablePngUnderIE : %d', comefrom);
	correctPngPictures();
	correctPngBackground();
}