function doExpandCollapse(id,img){
	var b = document.getElementById(id);
	if (b.style.display=='none'){
		b.style.display='';
		document.images[img].src='images/collapse.gif';
	}else{
		b.style.display='none';
		document.images[img].src='images/expand.gif';
	}
	return false;
}