var  cookieEnabled=(navigator.cookieEnabled)?  true  :  false;


var path;
var domain="";
function setCookie (name, value) 
{
if(cookieEnabled == false){alert("无法启用cookie。您的浏览器必须先接受 cookie，才能订制个性化首页！");return false;}
var argv = setCookie.arguments;
var argc = setCookie.arguments.length;
var expires = (2 < argc) ? argv[2] : null;
var path = (3 < argc) ? argv[3] : null;
var domain = (4 < argc) ? argv[4] : null;
document.cookie = name + "=" + value +";expires=" + expires.toGMTString() +";path=" + path + ";domain=" + domain;
//alert(document.cookie);
}

function GetCookie (name) 
{
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen) 
{
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return getCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) 
break; 
}
return null;
}

function getCookieVal (offset) 
{
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}

function rnd_str(str_0,str_1,str_2,str_3) 
{ 
var Seed_array=new Array(); 
var seedary; 
var i; 

Seed_array[0]="" 
Seed_array[1]= "A B C D E F G H I J K L M N O P Q R S T U V W X Y Z"; 
Seed_array[2]= "a b c d e f g h i j k l m n o p q r s t u v w x y z"; 
Seed_array[3]= "0 1 2 3 4 5 6 7 8 9"; 


if (!str_1&&!str_2&&!str_3){str_1=true;str_2=true;str_3=true;} 

if (str_1){Seed_array[0]+=Seed_array[1];} 
if (str_2){Seed_array[0]+=" "+Seed_array[2];} 
if (str_3){Seed_array[0]+=" "+Seed_array[3];} 

Seed_array[0]= Seed_array[0].split(" "); 
seedary="" 
for (i=0;i<str_0;i++) 
{ 
seedary+=Seed_array[0][Math.round(Math.random( )*(Seed_array[0].length-1))] 
} 
return(seedary); 

}