// correctly handle PNG transparency in Win IE 5.5 or higher.
function correctPNG(){
  
/*
  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"){
      var imgID = (img.id) ? "id='" + img.id + "' " : "";
*/
	  var img = document.getElementById("portallogo");
      var imgID = "id='portallogo' ";
	  	  
      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;
      var imgAttribs = img.attributes;
      
      for(var j=0; j<imgAttribs.length; j++){
        var imgAttrib = imgAttribs[j];
        if (imgAttrib.nodeName == "align"){
          if (imgAttrib.nodeValue == "left") imgStyle = "float:left;" + imgStyle;
          if (imgAttrib.nodeValue == "right") imgStyle = "float:right;" + imgStyle;
          break;
        }
      }
      var strNewHTML = "<div " + imgID + imgClass + imgTitle;
      strNewHTML += " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";";
      strNewHTML += "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader";
      strNewHTML += "(src=\'" + img.src + "\');\"></div>";
      img.outerHTML = strNewHTML;
//      i = i-1;
//    } 
//  }
  
}

var browser = navigator.userAgent;
var os = navigator.platform;
if( (browser.search(/Opera/) == -1 && browser.search(/MSIE/) != -1) && os.search(/Mac/) ){
  window.attachEvent("onload", correctPNG);
}