function class_cookielib(){ 
	this.getCookie = getCookie; 
	this.setCookie = setCookie; 
	this.removeCookie = removeCookie; 

	var expireDate = new Date(); 
	expireDate.setFullYear(expireDate.getFullYear()+1); 
	expireStr = "expires=" + expireDate.toUTCString(); 

	function getCookie(name){ 
		var gc=name+"="; 
		var Cookie=document.cookie; 
		if (Cookie.length>0) { 
			var start=Cookie.indexOf(gc); 
			if (start!=-1) { 
				start+=gc.length; 
				terminus=Cookie.indexOf(";",start); 
				if (terminus==-1) terminus=Cookie.length; 
					return unescape(Cookie.substring(start,terminus)); 
				} 
			} 
			return ''; 
		}
		
	function setCookie() { 
		var key = arguments[0]; 
		var val = arguments[1]; 
		var path = (typeof(arguments[2]) != 'undefined' ? arguments[2] : '/'); 
		var exp = (typeof(arguments[3]) != 'undefined' ? arguments[3] : expireStr); 
		var sc = key + "=" + escape(val) + "; path=" + path + "; " + exp; 
		document.cookie = sc; 
	} 

	function removeCookie(key,path) { 
		if(!path){ 
		path = '/'; 
		} 
		var rc = key + "=; path=" + path + "; expires=Thu, 1 Jan 1970 00:00:00 UTC"; 
		document.cookie = rc; 
	} 

} 
var cookieObj = new class_cookielib(); 

function onresize_handler(){ 
	if(document.layers){ 
	window.location.reload(); 
	} 
}

window.onresize = onresize_handler; 

var txtsize_val = 0; 
var txtsize_css_size = new Array(); 
txtsize_css_size[0] = 'small'; 
txtsize_css_size[1] = 'medium'; 
txtsize_css_size[2] = 'large'; 

function setTextSize(){ 
	if(cookieObj.getCookie('txtsize') != ''){ 
		txtsize_val = 1 * cookieObj.getCookie('txtsize'); 
	} 
	var style = txtsize_css_size[txtsize_val];
	var es = document.getElementsByTagName("body");
	es[0].id = style;
} 
/*
 * object id , txtsize_val , default_img , select_img
 */
function getDefaultSrc(objectId,n,default_image , select_image){
	if(cookieObj.getCookie('txtsize') != ''){ 
		txtsize_val = 1 * cookieObj.getCookie('txtsize'); 
	} 
	var e = document.getElementById(objectId);
	if(n == txtsize_val){
		e.src = select_image;
	}else{
		e.src = default_image;
	}
	return;
}

function changeTextSize(num){ 
	var fl_update = false; 
	var tmp_val = num; 
	if(tmp_val >= 0 && tmp_val < txtsize_css_size.length){ 
		txtsize_val = tmp_val; 
		fl_update = true; 
	} 
	if(fl_update){ 
		cookieObj.setCookie('txtsize',txtsize_val,'/',''); 
		window.location.reload(); 
	} 
} 

function defaultTextSize(){ 
	var fl_update = false; 
	var tmp_val = 0; 
	if(tmp_val >= 0 && tmp_val < txtsize_css_size.length){ 
		txtsize_val = tmp_val; 
		fl_update = true; 
	} 
	if(fl_update){ 
		cookieObj.setCookie('txtsize',txtsize_val,'/',''); 
		window.location.reload(); 
	} 
}