bloccare scroll onmouseover javascript

[Ajeje Brazof]

Ho il seguente codice che crea uno scroll a dissolvenza con link

<script type="text/javascript" language="JavaScript">
<!--

var slidelinks=new Array()

function slideshowlinks(){
for (i=0;i<slideshowlinks.arguments.length;i++)
slidelinks[i]=slideshowlinks.arguments[i]
}

function gotoshow(){
if (!window.winslide||winslide.closed)
winslide=window.open(slidelinks[whichlink])
else
winslide.location=slidelinks[whichlink]
winslide.focus()
}

slideshowlinks("www.prova2.it", "www.prova.it")

var slideShowSpeed = 2500
var crossFadeDuration = 3
var Pic = new Array()

Pic[0] = 'immagine1.jpg'
Pic[1] = 'immagine2.jpg'

var t
var j = 0
var p = Pic.length
var whichlink=0

var preLoad = new Array()
for (i = 0; i < p; i++){
   preLoad[i] = new Image()
   preLoad[i].src = Pic[i]
}

function runSlideShow(){
   if (document.all){
      document.images.SlideShow.style.filter="blendTrans(duration=2)"
      document.images.SlideShow.style.filter="blendTrans(duration=crossFadeDuration)"
      document.images.SlideShow.filters.blendTrans.Apply()      
   }
   document.images.SlideShow.src = preLoad[j].src
   whichlink=j
   if (document.all){
      document.images.SlideShow.filters.blendTrans.Play()
   }
   j = j + 1
   if (j > (p-1)) j=0
   t = setTimeout('runSlideShow()', slideShowSpeed)
}

//-->
</script> 

Vorrei mettere una pausa quando si passa con il mouse sopra l'immagine, e la ripresa dello scroll onmouseout. Come potrei fare? Grazie