function toggleTr(trID) 
{ 
	theTr=document.all(trID);
	theImg=document.all("IMG" + trID);
	if(theTr.style.display=='none') 
	{
		theTr.style.display=''; 
		theImg.src='images/down.jpg';	
	}
	else 
	{
		theTr.style.display='none'; 
		theImg.src='images/right.jpg';
	}
}