window.onload=function(){ var aDiv=document.getElementsByTagName('div'); aDiv[2].onclick=function(){ startMove(this,"opacity",100) }}function startMove(obj, attr, iTarget){ clearInterval(obj.timer); obj.timer=setInterval(function (){ var iCur=0; var t=obj.currentStyle[attr]||getComputedStyle(obj, false)[attr]; if(attr=="opacity"){ iCur=parseInt(parseFloat(t)*100) } else{ iCur=parseInt(t); } var iSpeed=(iTarget-iCur)/8; iSpeed=iSpeed>0?Math.ceil(iSpeed):Math.floor(iSpeed); if(iCur==iTarget) { clearInterval(obj.timer); } else { if(attr=="opacity"){ obj.style.filter="alpha(opacity:"+(iCur+iSpeed)+")"; obj.style[attr]=(iCur+iSpeed)/100; } else{ obj.style[attr]=iCur+iSpeed+'px'; } } }, 30)}
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