function doTrans (obj,transNo,dur){
var ec=document.getElementById(obj);
transNo=parseInt(transNo);
ec.style.filter="";
ec.style.filter="revealTrans(duration="+dur+",transition="+transNo+")";
ec.filters.revealTrans.apply();
ec.style.visibility=(ec.style.visibility=="visible")?"hidden":"visible";
ec.filters.revealTrans.play();
};