| 代 码 |
<script
language="JavaScript">
<!--
function statusMessageObject(p,d)
{
this.msg = MESSAGE
this.out = " "
this.pos = POSITION
this.delay =
DELAY
this.i = 0
this.reset = clearMessage
}
function clearMessage()
{
this.pos = POSITION
}
var POSITION = 100
var DELAY = 5
var
MESSAGE = "欢迎光临! Welcome to WWW.jb51.net "
var scroll = new
statusMessageObject()
function scroller() {
for (scroll.i = 0; scroll.i
< scroll.pos; scroll.i++) {
scroll.out += " "
}
if (scroll.pos >=
0)
scroll.out += scroll.msg
else scroll.out =
scroll.msg.substring(-scroll.pos,scroll.msg.length)
window.status =
scroll.out
scroll.out = " "
scroll.pos--
if (scroll.pos <
-(scroll.msg.length)) {
scroll.reset()
}
setTimeout
('scroller()',scroll.delay)
}
function snapIn(jumpSpaces,position)
{
var msg = scroll.msg
var out = ""
for (var i=0; i<position;
i++)
{out += msg.charAt(i)}
for (i=1;i<jumpSpaces;i++)
{out += "
"}
out += msg.charAt(position)
window.status = out
if (jumpSpaces <=
1) {
position++
if (msg.charAt(position) == ' ')
{position++
}
jumpSpaces = 100-position
} else if (jumpSpaces > 3)
{jumpSpaces
*= .75}
else
{jumpSpaces--}
if (position != msg.length) {
var cmd =
"snapIn(" + jumpSpaces + "," + position + ")";
scrollID =
window.setTimeout(cmd,scroll.delay);
} else
{
window.status=""
jumpSpaces=0
position=0
cmd = "snapIn(" +
jumpSpaces + "," + position + ")";
scrollID =
window.setTimeout(cmd,scroll.delay);
return false
}
return
true
}
snapIn(100,0);
//
-->
</script> |