hola alguien soy nueva en esto de desarrollo web
estoy tratando de crear un texto en movimiento
copie este codigo de una pagina
<script type="text/javascript">
<!--
var delayb4scroll=1000
var marqueespeed=1
var pauseit=1
var copyspeed=marqueespeed
var pausespeed=(pauseit==0)? copyspeed: 0
var actualheight=''
function scrollmarquee1(){
if (parseInt(cross_marquee.style.top)>(actualheight*(-1)+8))
cross_marquee.style.top=parseInt(cross_marquee.sty le.top)-copyspeed+"px"
else
cross_marquee.style.top=parseInt(marqueeheight)+8+ "px"
}
function initializemarquee1(){
cross_marquee=document.getElementById("vmarquee1")
cross_marquee.style.top=0
marqueeheight=document.getElementById("mision").of fsetHeight
actualheight=cross_marquee.offsetHeight
if (window.opera || navigator.userAgent.indexOf("Netscape/7")!=-1){ //if Opera or Netscape 7x, add scrollbars to scroll and exit
cross_marquee.style.height=marqueeheight+"px"
cross_marquee.style.overflow="scroll"
return
}
setTimeout('lefttime=setInterval("scrollmarquee1() ",30)', delayb4scroll)
}
if (window.addEventListener)
window.addEventListener("load", initializemarquee1, false)
else if (window.attachEvent)
window.attachEvent("onload", initializemarquee1)
else if (document.getElementById)
window.onload=initializemarquee1
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];}}
}
function MM_findObj(n, d) { //v4.01
var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_swapImage() { //v3.0
var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->
</script>
y si se mueve pero no se como hacerle porque corre a lo largo de toda la pagina
y iop kiero k corra en una sola area
por fis ayudenme