Loading a Random html file in an iframe

[gaszer]

Having no experience with JavaScript, what I need to do is randomly select a page from a directory of 500 html files sequentially named file001.html up to file500.html, and have it load in an iframe on an existing page.

I've come across a lot of scripts that will do this with images, or ones that you have to specify the files to be loaded in array, but isn't there a way to just randomly do this with html files?

Thanks,

[epots9]

give this a shot:

//random number from and including 1 - 500
var num = Math.floor(Math.random() * 500) + 1;
 
ifram.src="file" + num +".html";
 

u'll need to add more,
good luck

[gaszer]

Hey, thanks for your very speedy response. After jacking around with it, I modified the script from Dynamic Drive, inserted your suggestion, and got the following Frankenstein that seems to work.

Don't know if I need all of it, but it's working so I'm not going to mess around with it:

<script language="JavaScript1.2">
 
var ie=document.all&&navigator.userAgent.indexOf("Opera")==-1
var dom=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1
 
//Specify IFRAME display attributes
var iframeprops='width=170 height=210 marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no"'
 
//Specify number of random files to pick from to display inside iframe
var num = Math.floor(Math.random() * 12) + 1;
 
if (ie||dom)
document.write('<iframe id="dynstuff" src="" '+iframeprops+'></iframe>')
 
function random_iframe(){
if (ie||dom){
var iframeobj=document.getElementById? document.getElementById("dynstuff") : document.all.dynstuff
iframeobj.src="FILENAME" + num +".html"
}
}
 
window.onload=random_iframe
 
</script>

(Just testing with 12 files)