var htm="<a href='javascript:small()'><img src='/img/s_button.jpg' alt='小' width='17' height='17' name='small' /></a><a href='javascript:middle()'><img src='/img/m_button.jpg' alt='中' width='20' height='20' name='middle' /></a><a href='javascript:large()'><img src='/img/l_button.jpg' alt='大' width='23' height='23' name='large' /></a>";
var obj=document.getElementById("ch_font");
obj.innerHTML=htm;

function large() {
	document.getElementById("container").style.fontSize = "100%";
	document.large.src = "/img/l_button_a.jpg";
	document.small.src = "/img/s_button.jpg";
	document.middle.src = "/img/m_button.jpg";
	document.cookie = "FONT=large; expires=Tue, 31-Dec-2030 23:59:59;path=/;";
}
function middle() {
	document.getElementById("container").style.fontSize = "84%";
	document.cookie = "FONT=middle; expires=Tue, 31-Dec-2030 23:59:59;path=/;";
	document.large.src = "/img/l_button.jpg";
	document.small.src = "/img/s_button.jpg";
	document.middle.src = "/img/m_button_a.jpg";
}
function small() {
	document.getElementById("container").style.fontSize = "70%";
	document.cookie = "FONT=small; expires=Tue, 31-Dec-2030 23:59:59;path=/;";
	document.large.src = "/img/l_button.jpg";
	document.small.src = "/img/s_button_a.jpg";
	document.middle.src = "/img/m_button.jpg";
}

function getCookie(key){
	tmp = document.cookie+";";
	tmp1 = tmp.indexOf(key,0);
	if(tmp1 != -1){
		tmp = tmp.substring(tmp1,tmp.length);
		start = tmp.indexOf("=",0);
		end = tmp.indexOf(";",start);
		return(unescape(tmp.substring(start+1,end)));
	}
	return("");
}

nowfont = getCookie("FONT");


switch(nowfont){
	case "small":
		small();
		break;
	case "middle":
		middle();
		break;
	case "large":
		large();
		break;
	default:
		break;
}