$(function(){

	var cookie_name = 'fontsize';
	var my_domain = 'www.gasbldg.net';
	var font_m = 100;
	var font_l = 114;
	
	var fontM_a = $(".font_m a");
	var fontL_a = $(".font_l a");
	var Contents = $(".contents_top");
	var TopContents = $(".font");
	
	if($.cookie(cookie_name)) {
		var cookieFontSize = $.cookie(cookie_name);
		if ( cookieFontSize == font_m ) {
			fontM_a.css({backgroundPosition: "0px 0px"});		
			fontL_a.css({backgroundPosition: "0px 0px"});	
		}
		else {
			fontM_a.css({backgroundPosition: "0px -20px"});		
			fontL_a.css({backgroundPosition: "0px -20px"});		
		}
		TopContents.css("font-size", cookieFontSize+"%");
		Contents.css("font-size", cookieFontSize+"%");
	}
	else { // first
		TopContents.css("font-size", font_m+"%");
		Contents.css("font-size", font_m+"%");
		fontM_a.css({backgroundPosition: "0px 0px"});		
		fontL_a.css({backgroundPosition: "0px 0px"});		
		$.cookie(cookie_name, font_m ,{ path: '/', domain:my_domain });
	}

	// M
	fontM_a.click(function(){
		var newFontSize = font_m;
		TopContents.css("font-size", font_m+"%");
		Contents.css("font-size", font_m+"%");
		fontM_a.css({backgroundPosition: "0px 0px"});		
		fontL_a.css({backgroundPosition: "0px 0px"});		
		$.cookie(cookie_name, font_m ,{ path: '/', domain:my_domain });
	});
	// L
	fontL_a.click(function(){
		var newFontSize = font_l;
		TopContents.css("font-size", font_l+"%");
		Contents.css("font-size", font_l+"%");
		fontM_a.css({backgroundPosition: "0px -20px"});		
		fontL_a.css({backgroundPosition: "0px -20px"});		
		$.cookie(cookie_name, font_l ,{ path: '/', domain:my_domain });
	});
});