// JScript 文件
function small(btn){
	var idname = new String(btn.id);
	var e = idname.lastIndexOf("f")+1;
	var s = idname.substring(0,e);
	var tabNumber = btn.parentNode.childNodes.length;
	for(i=0;i<tabNumber;i++){
			document.getElementById(s+i).className = "n";
		};
	tabit2(btn);
	btn.className = "s";
};