// JavaScript Document
function initial_size_set(imgPath){
	if(navigator.userAgent.indexOf('MSIE 6') != -1){
		var large_img = document.getElementById('large_btn');
		var normal_img = document.getElementById('normal_btn');
		var small_img = document.getElementById('small_btn');
		var large_gif = large_img.src.replace("png","gif");
		var normal_gif = normal_img.src.replace("png","gif");
		var small_gif = small_img.src.replace("png","gif");
		large_img.src = large_gif;
		normal_img.src = normal_gif;
		small_img.src = small_gif;
	}
	var defsize = getCookie('fsize');
	if(defsize != ""){
		fontsize_sw(defsize,imgPath);
	}
}

function fontsize_sw(size,imgPath){
	if(navigator.userAgent.indexOf('MSIE 6') != -1){
		var icon_small = 'small.gif';
		var icon_normal = 'normal.gif';
		var icon_large = 'large.gif';
		var icon_small_active = 'small_active.gif';
		var icon_normal_active = 'normal_active.gif';
		var icon_large_active = 'large_active.gif';
	}else{
		var icon_small = 'small.png';
		var icon_normal = 'normal.png';
		var icon_large = 'large.png';
		var icon_small_active = 'small_active.png';
		var icon_normal_active = 'normal_active.png';
		var icon_large_active = 'large_active.png';
	}
	var l_btn = document.getElementById('large_btn');
	var n_btn = document.getElementById('normal_btn');
	var s_btn = document.getElementById('small_btn');
	if(size == 'large'){
	document.body.style.fontSize="100%";
	l_btn.src = imgPath + icon_large_active;
	n_btn.src = imgPath + icon_normal;
	s_btn.src = imgPath + icon_small;
	set_status('large');
	}else if(size == 'normal'){
	document.body.style.fontSize="80%";
	l_btn.src = imgPath + icon_large;
	n_btn.src = imgPath + icon_normal_active;
	s_btn.src = imgPath + icon_small;
	set_status('normal');
	}else if(size == 'small'){
	document.body.style.fontSize="70%";
	l_btn.src = imgPath + icon_large;
	n_btn.src = imgPath + icon_normal;
	s_btn.src = imgPath + icon_small_active;
	set_status('small');
	}
}

function set_status(fsize){
	document.cookie="fsize="+fsize+";";
}

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