http://freeswfgames.github.io/title.js

1 var marker = "front";
2 var main_title=document.title;
3 function tr_slide_inout(val){
4	var msg =main_title;
5	var res = " ";
6	var speed = 300;
7	var pos = val;
8	var le = msg.length;
9	if(marker == "front")
10	{
11		if(pos < le)
12		{
13			pos=pos+1;
14			scroll = msg.substr(0,pos);
15			document.title = scroll;
16			timer = window.setTimeout("tr_slide_inout("+pos+")",speed);
17		}
18		else
19		{
20			marker = "rear";
21			timer = window.setTimeout("tr_slide_inout("+pos+")",speed);
22		}
23	}
24	else
25	{
26		if(pos > 0)
27		{
28			pos = pos-1;
29			var ale = le-pos;
30			scrol = msg.substr(ale,le); 
31			document.title = scrol;
32			timer =window.setTimeout("tr_slide_inout("+pos+")",speed);
33		}
34		else
35		{
36			marker = "front";
37			timer = window.setTimeout("tr_slide_inout("+pos+")",speed); 
38		}
39	}
40}
41tr_slide_inout(0); 
42