var refType="";
var refAryStatus = new Array();

function refHighLight(str_id, h)
{
		id=document.getElementById('refImg' + str_id);
		if ( !id ) return ;
				
			var ext='';	
			if ( h ) ext = 'hover';
			else ext='active';

/*
		if ( refAryStatus[str_id] == 1)
			ext2="_a";
		else 				
			ext2="";
*/

			id.src = 'images/ref_' + str_id.toLowerCase() + '_' + ext + /*ext2+*/'.gif';
}


function refDownLight(str_id)
{

		id=document.getElementById('refImg' + str_id);
		if ( !id ) return ;

		if ( refAryStatus[str_id] == 1)
			id.src = 'images/ref_' + str_id.toLowerCase() + '_hover.gif';
		else
			id.src = 'images/ref_' + str_id.toLowerCase() + '.gif';
}




function showRefType()
{

		for (i=0;i<refType.length; i++)
		{

			if ( refType[i]  )
			{
				refAryStatus[ refType[i]]=1;
				refHighLight( refType[i],1);
			}

		
		
		}
}


// Correctly handle PNG transparency in Win IE 5.5 or higher.
// http://homepage.ntlworld.com/bobosola. Updated 02-March-2004

function correctPNG() 
{

	if(navigator.appName.indexOf("Explorer") == -1)
	{
  	 return false;
	}
	

   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
	     }
      }
   }
//window.attachEvent("onload", correctPNG);