function onOffRegions(id, status){
	try{
		var obj=document.getElementById('region'+id);
		if(obj){
			var visibility=(status=='over')?'visible':'hidden';
			obj.style.visibility=visibility;
			// window.status=id;
		}
	}catch(e){
		// window.status='0';
	}
}

function onOffSubject(reg, id, status){
	try{
		var obj=document.getElementById('reg'+ reg+ '-'+ id);
		if(obj){
			var visibility=(status=='over')?'visible':'hidden';
			obj.style.visibility=visibility;
			// window.status=id;
		}
	}catch(e){
		// window.status='0';
	}
}