var clientPC = navigator.userAgent.toLowerCase(); // Get client info
var clientVer = parseInt(navigator.appVersion); // Get browser version

var is_ie = ((clientPC.indexOf("msie") != -1) && (clientPC.indexOf("opera") == -1));
var is_nav = ((clientPC.indexOf('mozilla')!=-1) && (clientPC.indexOf('firefox')!=-1));
var is_moz = 0;
var is_win = ((clientPC.indexOf("win")!=-1) || (clientPC.indexOf("16bit") != -1));

function SetCookie(sName, sValue){
  document.cookie = sName + "=" + escape(sValue) + ";";
}
function DelCookie(sName){
  document.cookie = sName + "=" + escape(sValue) + "; expires=Fri, 31 Dec 1999 23:59:59 GMT;";
}
function GetCookie(sName){
	var cookies_string = document.cookie;
	var cookies_array = cookies_string.split(";");
	var cookies = new Array();
	for(i=0; i<cookies_array.length; i++){
		cookies = cookies_array[i].split("=");
		if(cookies[0].indexOf(sName) !=-1){
			return cookies[1];
		}
	}
	return '';
}
function update_menu(obj){
	var div_menu_id = obj.id+'_0';
	var div_menu = document.getElementById(div_menu_id);
	var div_header_bg = obj.style.backgroundImage.toString();
	div_header_bg = div_header_bg.substr(0, div_header_bg.length-6);
	var display = div_menu.style.display;
	if(display=='none'){
		SetCookie('menu_status_'+obj.id, 1);
		obj.style.backgroundImage = div_header_bg+'4.gif)';
		div_menu.style.display = 'block';
	}else{
		SetCookie('menu_status_'+obj.id, 0);
		obj.style.backgroundImage = div_header_bg+'3.gif)';
		div_menu.style.display = 'none';
	}
	return false;
}
function update_menu_act(obj, act){
	var div_menu_id = obj.id+'_0';
	var div_menu = document.getElementById(div_menu_id);
	var div_header_bg = obj.style.backgroundImage.toString();
	div_header_bg = div_header_bg.substr(0, div_header_bg.length-6);
	if(act==1){
		SetCookie('menu_status_'+obj.id, 1);
		obj.style.backgroundImage = div_header_bg+'4.gif)';
		div_menu.style.display = 'block';
	}else{
		SetCookie('menu_status_'+obj.id, 0);
		obj.style.backgroundImage = div_header_bg+'3.gif)';
		div_menu.style.display = 'none';
	}
	return false;
}