function switchIE6Images(containerId){
    if (navigator.appVersion.indexOf("MSIE")!=-1){
        var temp=navigator.appVersion.split("MSIE")
        var version=parseFloat(temp[1]);
        if(version>=6&&version<7){
            //IE 6 found
            //get ContentContainer
            var mainElem = document.getElementById(containerId);
            if(mainElem){
                //detect all images
                var images = mainElem.getElementsByTagName("img");
                
                for(var i=0; i<images.length; i++)
                {
                    var img = images[i];
                    if(img.src.substring(img.src.length-4)==".png" || img.src.indexOf('isrenderingengine.aspx') > -1)
                    {
                    
                        //png detected
                        //create div
                        var div = document.createElement("div");
                        div.style.width = img.width;
                        div.style.height = img.height;
                        //alert(_utf8_encode(urlDecode(img.src)));
                        div.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + img.src + "');"
                        //replace img with div
                        img.parentNode.replaceChild(div, img);
                        i--;
                    }
                }
            }
        }
    }
}