if( document.images )
{
	var offarrow     = new Image();
			offarrow.src = "/images/clear.gif";
	var onarrow      = new Image();
			onarrow.src  = "/images/arrow.gif";
}
										 
function arrowoff( offname )
{
	if( document.images )
	{
		document.getElementById(offname).src = offarrow.src;
//		document[offname].src = offarrow.src;
	}
}
													
function arrowon( onname )
{
	if( document.images )
	{
		document.getElementById(onname).src = onarrow.src;
//		document[onname].src = onarrow.src;
	}
}