v3 = 0; op = 0; ie4  = 0; ie5 = 0; nn4 = 0; nn6 = 0; 
isMac = 0; aol = 0;

if(document.images){
    if(navigator.userAgent.indexOf("Opera") != -1){
        op = 1;
    } else {
        if(navigator.userAgent.indexOf("AOL") != -1){
            aol = 1;
        } else {
            ie4 = (document.all && !document.getElementById);
            nn4 = (document.layers);
            ie5 = (document.all && document.getElementById);
            nn6 = (document.addEventListener);
        }
    }
} else {
    v3 = 1;	
}

if(navigator.userAgent.indexOf("Mac") != -1){
    isMac = 1;
}
if(ie4){ // do this
    //alert("You are using Internet Explorer 4");
} 
if(ie5){ // do this
    //alert("You are using Internet Explorer 5 or higher");



   function correctPNG() // correctly handle PNG transparency in Win IE 5.5 or higher.
   {
      
       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 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
		     i = i-1
	         }
          }
    }
    //
    // George Vlahakis 2008 : Telenavis
    //
    // Had to disable this as it effected the jsMap toolbar. It seems to work even in IE7 where PNG transparency works fine.
    // Also you don't need to convert to a SPAN object to set the DX filter. It can remain as an IMG tag.
    // 
    // The problem is that this particular script actually destroys the original IMG and with it it also takes any event handlers!!!
    //
    // window.attachEvent("onload", correctPNG); 
    }
   
   else
   {
   

   }