TalkPHP - Need Help

Can someone tell me how to put in a dhtml code in phpbb3?
This is the code-
<script type="text/javascript">

//Specify the slider's width (in pixels)
var sliderwidth="800px"
//Specify the slider's height
var sliderheight="100px"
//Specify the slider's slide speed (larger is faster 1-10)
var slidespeed=3
//configure background color:
slidebgcolor="#F1F2ED"

//Specify the slider's images
var leftrightslide=new Array()
var finalslide=''
leftrightslide[0]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2601"><img src="http://www.goonersworld.co.uk/player19Almunia.jpg" border=0></a>'
leftrightslide[1]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2581"><img src="http://www.goonersworld.co.uk/player1diaby.jpg" border=0></a>'
leftrightslide[2]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2583"><img src="http://www.goonersworld.co.uk/player2sagna.jpg" border=0></a>'
leftrightslide[3]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2584"><img src="http://www.goonersworld.co.uk/player4fabregas.jpg" border=0></a>'
leftrightslide[4]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2585"><img src="http://www.goonersworld.co.uk/player5toure.jpg" border=0></a>'
leftrightslide[5]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2586"><img src="http://www.goonersworld.co.uk/player6senderos.jpg" border=0></a>'
leftrightslide[6]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2587"><img src="http://www.goonersworld.co.uk/player7rosicky.jpg" border=0></a>'
leftrightslide[7]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2589"><img src="http://www.goonersworld.co.uk/player8dudu.jpg" border=0></a>'
leftrightslide[8]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2590"><img src="http://www.goonersworld.co.uk/player9gallas.jpg" border=0></a>'
leftrightslide[9]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2591"><img src="http://www.goonersworld.co.uk/player10persie.jpg" border=0></a>'
leftrightslide[10]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2592"><img src="http://www.goonersworld.co.uk/player11hleb.jpg" border=0></a>'
leftrightslide[11]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2593"><img src="http://www.goonersworld.co.uk/player12Denilson.jpg" border=0></a>'
leftrightslide[12]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2594"><img src="http://www.goonersworld.co.uk/player13flamini.jpg" border=0></a>'
leftrightslide[13]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2595"><img src="http://www.goonersworld.co.uk/player14song.jpg" border=0></a>'
leftrightslide[14]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2596"><img src="http://www.goonersworld.co.uk/player15Gilberto.jpg" border=0></a>'
leftrightslide[15]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2597"><img src="http://www.goonersworld.co.uk/player16Djourou.jpg" border=0></a>'
leftrightslide[16]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2599"><img src="http://www.goonersworld.co.uk/player17Fabianski.jpg" border=0></a>'
leftrightslide[17]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2600"><img src="http://www.goonersworld.co.uk/player18Clichy.jpg" border=0></a>'
leftrightslide[18]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2582"><img src="http://www.goonersworld.co.uk/player3jens.jpg" border=0></a>'
leftrightslide[19]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2602"><img src="http://www.goonersworld.co.uk/player20Adebayor.jpg" border=0></a>'
leftrightslide[20]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2603"><img src="http://www.goonersworld.co.uk/player21Bendtner.jpg" border=0></a>'
leftrightslide[21]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2604"><img src="http://www.goonersworld.co.uk/player22Eboue.jpg" border=0></a>'
leftrightslide[22]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2605"><img src="http://www.goonersworld.co.uk/player23Traore.jpg" border=0></a>'
leftrightslide[23]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2606"><img src="http://www.goonersworld.co.uk/player24Hoyte.jpg" border=0></a>'
leftrightslide[24]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2607"><img src="http://www.goonersworld.co.uk/player25Walcott.jpg" border=0></a>'
leftrightslide[25]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2608"><img src="http://www.goonersworld.co.uk/player26diarra.jpg" border=0></a>'
leftrightslide[25]='<a href="http://www.goonersworld.co.uk/forum/viewtopic.php?f=44&t=2643"><img src="http://www.goonersworld.co.uk/player28M%25e9rida.gif" border=0></a>'

//Specify gap between each image (use HTML):
var imagegap=" "

//Specify pixels gap between each slideshow rotation (use integer):
var slideshowgap=5

////NO NEED TO EDIT BELOW THIS LINE////////////

var copyspeed=slidespeed
leftrightslide='<nobr>'+leftrightslide.join(imageg ap)+'</nobr>'
var iedom=document.all||document.getElementById
if (iedom)
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100px;left:-9000px">'+leftrightslide+'</span>')
var actualwidth=''
var cross_slide, ns_slide

function fillup(){
if (iedom){
cross_slide=document.getElementById? document.getElementById("test2") : document.all.test2
cross_slide2=document.getElementById? document.getElementById("test3") : document.all.test3
cross_slide.innerHTML=cross_slide2.innerHTML=leftr ightslide
actualwidth=document.all? cross_slide.offsetWidth : document.getElementById("temp").offsetWidth
cross_slide2.style.left=actualwidth+slideshowgap+" px"
}
else if (document.layers){
ns_slide=document.ns_slidemenu.document.ns_slideme nu2
ns_slide2=document.ns_slidemenu.document.ns_slidem enu3
ns_slide.document.write(leftrightslide)
ns_slide.document.close()
actualwidth=ns_slide.document.width
ns_slide2.left=actualwidth+slideshowgap
ns_slide2.document.write(leftrightslide)
ns_slide2.document.close()
}
lefttime=setInterval("slideleft()",30)
}
window.onload=fillup

function slideleft(){
if (iedom){
if (parseInt(cross_slide.style.left)>(actualwidth*(-1)+8))
cross_slide.style.left=parseInt(cross_slide.style. left)-copyspeed+"px"
else
cross_slide.style.left=parseInt(cross_slide2.style .left)+actualwidth+slideshowgap+"px"

if (parseInt(cross_slide2.style.left)>(actualwidth*(-1)+8))
cross_slide2.style.left=parseInt(cross_slide2.styl e.left)-copyspeed+"px"
else
cross_slide2.style.left=parseInt(cross_slide.style .left)+actualwidth+slideshowgap+"px"

}
else if (document.layers){
if (ns_slide.left>(actualwidth*(-1)+8))
ns_slide.left-=copyspeed
else
ns_slide.left=ns_slide2.left+actualwidth+slideshow gap

if (ns_slide2.left>(actualwidth*(-1)+8))
ns_slide2.left-=copyspeed
else
ns_slide2.left=ns_slide.left+actualwidth+slideshow gap
}
}

if (iedom||document.layers){
with (document){
document.write('<table border="0" cellspacing="0" cellpadding="0"><td>')
if (iedom){
write('<div style="position:relative;width:'+sliderwidth+';hei ght:'+sliderheight+';overflow:hidden">')
write('<div style="position:absolute;width:'+sliderwidth+';hei ght:'+sliderheight+';background-color:'+slidebgcolor+'" onMouseover="copyspeed=0" onMouseout="copyspeed=slidespeed">')
write('<div id="test2" style="position:absolute;left:0px;top:0px"></div>')
write('<div id="test3" style="position:absolute;left:-1000px;top:0px"></div>')
write('</div></div>')
}
else if (document.layers){
write('<ilayer width='+sliderwidth+' height='+sliderheight+' name="ns_slidemenu" bgColor='+slidebgcolor+'>')
write('<layer name="ns_slidemenu2" left=0 top=0 onMouseover="copyspeed=0" onMouseout="copyspeed=slidespeed"></layer>')
write('<layer name="ns_slidemenu3" left=0 top=0 onMouseover="copyspeed=0" onMouseout="copyspeed=slidespeed"></layer>')
write('</ilayer>')
}
document.write('</td></table>')
}
}
</script>