function changeImg(imgId,src){
	imgObj = null;
	if ( document.images){imgObj = document.images[imgId];}
	if ( !imgObj && document.all){imgObj = document.all(imgId);}
	if ( !imgObj && document.getElementById ){imgObj = document.getElementById(imgId);}
	if ( imgObj ){imgObj.src = src;}
}
function newImg(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}