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08.01.2008 at 12:59AM PDT, ID: 23613495
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8.6

Javascript: Automatic scrolling like rolling credits

Asked by scottlum in JavaScript, Mozilla Web Browser, Firefox Web Browser

Tags: , ,

Hi Experts,

I found a Javascript program that would make a browser window automatically scroll, simulating rolling credits like you would see at the end of a movie.

The problem with this javascript program is that it does not start up automatically in Firefox, but does so in IE.  I'm suspecting is something with the window.onload directive, but i'm not a javascript expert.

Would somebody please give me some advice on how to make sure the auto scroll program starts as soon as the web page is loaded?

Here is the javascript:



<SCRIPT TYPE="TEXT/JAVASCRIPT">

//change 1 to another integer to alter the scroll speed. Greater is faster

var speed=1

var currentpos=0,alt=1,curpos1=0,curpos2=-1

function initialize(){

startit()

}

function scrollwindow(){

if (document.all &&

!document.getElementById)

temp=document.body.scrollTop

else

temp=window.pageYOffset

if (alt==0)

alt=2

else

alt=1

if (alt==0)

curpos1=temp

else

curpos2=temp

if (curpos1!=curpos2){

if (document.all)

currentpos=document.body.scrollTop+speed

else

currentpos=window.pageYOffset+speed

window.scroll(0,currentpos)

}

else{

currentpos=0

window.scroll(0,currentpos)

}

}

function startit(){

setInterval("scrollwindow()",50)

}

window.onload=initialize

</SCRIPT>Start Free Trial 
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<SCRIPT TYPE="TEXT/JAVASCRIPT">
 
//change 1 to another integer to alter the scroll speed. Greater is faster
 
var speed=1
 
var currentpos=0,alt=1,curpos1=0,curpos2=-1
 
function initialize(){
 
startit()
 
}
 
function scrollwindow(){
 
if (document.all &&
 
!document.getElementById)
 
temp=document.body.scrollTop
 
else
 
temp=window.pageYOffset
 
if (alt==0)
 
alt=2
 
else
 
alt=1
 
if (alt==0)
 
curpos1=temp
 
else
 
curpos2=temp
 
if (curpos1!=curpos2){
 
if (document.all)
 
currentpos=document.body.scrollTop+speed
 
else
 
currentpos=window.pageYOffset+speed
 
window.scroll(0,currentpos)
 
}
 
else{
 
currentpos=0
 
window.scroll(0,currentpos)
 
}
 
}
 
function startit(){
 
setInterval("scrollwindow()",50)
 
}
 
window.onload=initialize 
 
</SCRIPT>
[+][-]08.01.2008 at 05:06AM PDT, ID: 22137415

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About this solution

Zones: JavaScript, Mozilla Web Browser, Firefox Web Browser
Tags: javascript, Firefox / mozilla, none
Sign Up Now!
Solution Provided By: mplungjan
Participating Experts: 1
Solution Grade: A
 
 
[+][-]08.02.2008 at 04:43AM PDT, ID: 22144007

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