var scrolltimer;
     function initScroll(BlockId, speedScroll, pxIncrement, TimeOver, incrementOver) {
         var MonObjet = document.getElementById(BlockId);

		 var topDiv = MonObjet.insertBefore(document.createElement("DIV"),MonObjet.firstChild);
         topDiv.style.height = MonObjet.clientHeight + "px";
         var bottomDiv = MonObjet.appendChild(document.createElement("DIV"));
         bottomDiv.style.height = MonObjet.clientHeight + "px";
		 
         MonObjet.onmouseover = function(){
             clearTimeout(scrolltimer);
             scrollBlock(BlockId, TimeOver, incrementOver, TimeOver, incrementOver);
         }
         MonObjet.onmouseout = function(){
             clearTimeout(scrolltimer);
             scrollBlock(BlockId, speedScroll, pxIncrement, TimeOver, incrementOver);
         }
         scrollBlock(BlockId,speedScroll,pxIncrement);
     }
    
     function scrollBlock(BlockId,TimeScroll,pxIncrement){
         var monObjet = document.getElementById(BlockId)
         if (TimeScroll=='' | TimeScroll==null | TimeScroll <= 0) TimeScroll = 70;
         if (pxIncrement=='' | pxIncrement==null | pxIncrement <= 0) pxIncrement = 1;
         //ScrollTop = ScrollTop + speed;  
         monObjet.scrollTop = monObjet.scrollTop + pxIncrement;
         if (monObjet.scrollTop >= monObjet.scrollHeight-monObjet.clientHeight) monObjet.scrollTop = 1;
         scrolltimer = setTimeout("scrollBlock('"+ BlockId + "'," + TimeScroll + "," + pxIncrement +" )", TimeScroll);
     }
	 
  window.onload = function(){
         initScroll('blocktoscroll',70, 1, 0, 0);
     }