Christmas Theme help

[Disco_Dave]

Hi Peeps

I wondering if anyone could help me with this? Our last admin guy deleted our Christmas theme last year, I'm going through some old templates and I found it, see below:

/******************************************
Aaron's Snow Effect Script
******************************************/

//Configure below to change URL path to the snow image
var snowsrc="http://www.nirc.org.uk/snow.gif"
// Configure below to change number of snow to render
var no = 0;
// Configure whether snow should disappear after x seconds (0=never):
var hidesnowtime = 25;
// Configure how much snow should drop down before fading ("windowheight" or "pageheight")
var snowdistance = "windowheight";
///////////Stop Config//////////////////////////////////
var ie4up = (document.all) ? 1 : 0;
var ns6up = (document.getElementById&&!document.all) ? 1 : 0;
function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}
var dx, xp, yp; // coordinate and position variables
var am, stx, sty; // amplitude and step variables
var i, doc_width = 800, doc_height = 600;

if (ns6up) {
doc_width = self.innerWidth;
doc_height = self.innerHeight;
} else if (ie4up) {
doc_width = iecompattest().clientWidth;
doc_height = iecompattest().clientHeight;
}
dx = new Array();
xp = new Array();
yp = new Array();
am = new Array();
stx = new Array();
sty = new Array();
snowsrc=(snowsrc.indexOf("dynamicdrive.com")!=-1)? "snow.gif" : snowsrc
for (i = 0; i < no; ++ i) {
dx[i] = 0; // set coordinate variables
xp[i] = Math.random()*(doc_width-50); // set position variables
yp[i] = Math.random()*doc_height;
am[i] = Math.random()*20; // set amplitude variables
stx[i] = 0.02 + Math.random()/10; // set step variables
sty[i] = 0.7 + Math.random(); // set step variables
if (ie4up||ns6up) {
if (i == 0) {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><a href=\"http://dynamicdrive.com\"><img src='"+snowsrc+"' border=\"0\"><\/a><\/div>");
} else {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+snowsrc+"' border=\"0\"><\/div>");
}
}
}
function snowIE_NS6() { // IE and NS6 main animation function
doc_width = ns6up?window.innerWidth-10 : iecompattest().clientWidth-10;
doc_height=(window.innerHeight && snowdistance=="windowheight")? window.innerHeight : (ie4up && snowdistance=="windowheight")? iecompattest().clientHeight : (ie4up && !window.opera && snowdistance=="pageheight")? iecompattest().scrollHeight : iecompattest().offsetHeight;
for (i = 0; i < no; ++ i) { // iterate for every dot
yp[i] += sty[i];
if (yp[i] > doc_height-50) {
xp[i] = Math.random()*(doc_width-am[i]-30);
yp[i] = 0;
stx[i] = 0.02 + Math.random()/10;
sty[i] = 0.7 + Math.random();
}
dx[i] += stx[i];
document.getElementById("dot"+i).style.top=yp[i]+"px";
document.getElementById("dot"+i).style.left=xp[i] + am[i]*Math.sin(dx[i])+"px";
}
snowtimer=setTimeout("snowIE_NS6()", 10);
}
function hidesnow(){
if (window.snowtimer) clearTimeout(snowtimer)
for (i=0; i<no; i++) document.getElementById("dot"+i).style.visibility= "hidden"
}

if (ie4up||ns6up){
snowIE_NS6();
if (hidesnowtime>0)
setTimeout("hidesnow()", hidesnowtime*1000)
}
</script>
</script>
<style type="text/css">
.stepcarousel{
position: relative; /*leave this value alone*/
border: 10px solid black;
overflow: scroll; /*leave this value alone*/
width: 270px; /*Width of Carousel Viewer itself*/
height: 200px; /*Height should enough to fit largest content's height*/
}
.stepcarousel .belt{
position: absolute; /*leave this value alone*/
left: 0;
top: 0;
}
.stepcarousel .panel{
float: left; /*leave this value alone*/
overflow: hidden; /*clip content that go outside dimensions of holding panel DIV*/
margin: 10px; /*margin around each panel*/
width: 250px; /*Width of each panel holding each content. If removed, widths should be individually defined on each content DIV then. */
}
</style>
<script type="text/javascript">
stepcarousel.setup({
galleryid: 'mygallery', //id of carousel DIV
beltclass: 'belt', //class of inner "belt" DIV containing all the panel DIVs
panelclass: 'panel', //class of panel DIVs each holding content
autostep: {enable:true, moveby:1, pause:3000},
panelbehavior: {speed:500, wraparound:false, persist:true},
defaultbuttons: {enable: true, moveby: 1, leftnav: ['http://i34.tinypic.com/317e0s5.gif', -5, 80], rightnav: ['http://i38.tinypic.com/33o7di8.gif', -20, 80]},
statusvars: ['statusA', 'statusB', 'statusC'], //register 3 variables that contain current panel (start), current panel (last), and total panels
contenttype: ['inline'] //content setting ['inline'] or ['ajax', 'path_to_external_file']
})
</script>

I'm in no way a coder or a graphic designer, but I'd like to be able to get this back up and running for Chrimbo, so If anyone could help me that would be great.

Regards,
Dave