MSFPhover = 
  (((navigator.appName == "Netscape") && 
  (parseInt(navigator.appVersion) >= 3 )) || 
  ((navigator.appName == "Microsoft Internet Explorer") && 
  (parseInt(navigator.appVersion) >= 4 ))); 

function MSFPpreload(img) 
{
  var a=new Image(); a.src=img; return a; 
}

function changeImage (imgName,over,n)
{

	img1=imgName+'n';
	img2=imgName+'h';
	img3=imgName+'g';
	imgout="images//menu//"+imgName+".gif";
        imgover="images//menu//"+imgName+"a.gif";
	imgdet="images//menu//"+imgName+"det.gif";
	imgdefault="default"+n;
	
	if(MSFPhover) {
		if (over)
		{
			img2=MSFPpreload(imgover);
			img3=MSFPpreload(imgdet);
			document[imgName].src=img2.src; 		
			document[imgdefault].src=img3.src;
		
		} 
		else
		{  

			img1=MSFPpreload(imgout);
			document[imgName].src=img1.src; 	
			document[imgdefault].src="images//menu//defaultdet.gif";	
			
		}
	}
}


function changeImage2(imgname,over)
{
	
	imgout="images//menu//"+imgname+".gif";
        imgover="images//menu//"+imgname+"a.gif";
		
	if(MSFPhover){
		if (over){
			imgnew=MSFPpreload(imgover);
			document[imgname].src=imgnew.src;
		}
		else{
			imgorig=MSFPpreload(imgout);
			document[imgname].src=imgorig.src;
		}
	}
}