Insert javascript into page

hello
i’d like to insert a javascript in a page (not in a post)
and i don’t find how to do it
It works in a html page..
I try to insert the code the header.php and the form code in the “page” and it doesn’t work

Thanks for help
Here ‘s te full script code

<script language=”JavaScript”>
<!–

var dannee=-1, dmois=-1, djour=-1, dheure=-1, dminute=-1
var compDat = new Date(“May 29, 2004 20:22:33”)
var msparan = 365.25 * 24 * 60 * 60 * 1000
var msparmois = 31 * 24 * 60 * 60 * 1000
var msparjour = 24 * 60 * 60 * 1000
var msparheure = 60 * 60 * 1000
var msparmn = 60 * 1000
var msparsec = 1000
function calculage(){
var daten = new Date()
var changeA = dannee
var changeJ = djour
var changeH = dheure
var changeM = dminute
var diffMs = daten.getTime() – compDat.getTime()
dannee = Math.floor(diffMs / msparan)
diffMs -= dannee * msparan
djour = Math.floor(diffMs / msparjour)
diffMs -= djour * msparjour
dheure = Math.floor(diffMs / msparheure)
diffMs -= dheure * msparheure
dminute = Math.floor(diffMs / msparmn)
diffMs -= dminute * msparmn
var diffSecs = Math.floor(diffMs / msparsec)
if(changeA!=dannee) document.forms[0].ans.value=dannee
if(changeJ!=djour) document.forms[0].jours.value=djour
if(changeH!=dheure) document.forms[0].heures.value=dheure
if(changeM!=dminute) document.forms[0].mins.value=dminute
document.forms[0].secs.value=diffSecs
timerID = setTimeout(“calculage()”,1000)
}

function MM_preloadImages() { //v3.0
var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
if (a[i].indexOf(“#”)!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
//–>
</script>

and the form i try yo insert in my page

<form>
<div align=”center”><font color=”#000000″ size=”3″ face=”Comic Sans MS”>Salut
vous ne le savez peut etre pas mais j’ai
<input type=”hidden” name=”ans” size=”2″ onFocus=”this.blur()”>
<input type=”text” name=”jours” size=”2″ onFocus=”this.blur()”>
jours
<input type=”text” name=”heures” size=”2″ onFocus=”this.blur()”>
heures
<input type=”text” name=”mins” size=”2″ onFocus=”this.blur()”>
minutes
<input type=”text” name=”secs” size=”2″ onFocus=”this.blur()”>
secondes </font></div>
</form>