//"index_count" is subtracted from "title_length" to get the first # of the substring method
var index_count = 0; 

// What you want to scroll in the title bar
var title_string = "欢迎光临杭州正强万向节有限公司网站";

// length of title string
var title_length = title_string.length;

// Variable for setTimeout()
var cmon;

// Counter for clearTimeout()
var kill_length = 0;

function loopTheScroll()
{
scrollTheTitle();

// If greater than length of string then stop calling itself
if(kill_length > title_length)
 {
 clearTimeout(cmon);
 }

kill_length++;

// Calls itself 10x per second - change the value to speed up or slow down the scroll (in 1/1000th of a second)
cmon = setTimeout("loopTheScroll();",100)
}


function scrollTheTitle()
{

// Difficult to explain, must be familiar w/ the substring method
var doc_title = title_string.substring((title_length - index_count - 1),title_length);

// put doc_title in the title bar
document.title = doc_title;

index_count++;
}


loopTheScroll();