function getStyle(obj, name){ if(obj.currentStyle) { return obj.currentStyle[name]; } else { return getComputedStyle(obj, false)[name]; }}function startMove(obj, attr, iTarget, fnEnd){ clearInterval(obj.timer); obj.timer=setInterval(function (){ var cur=0; if(attr=='opacity') { cur=Math.round(parseFloat(getStyle(obj, attr))*100); } else { cur=parseInt(getStyle(obj, attr)); } var speed=(iTarget-cur)/6; speed=speed>0?Math.ceil(speed):Math.floor(speed); if(cur==iTarget) { clearInterval(obj.timer); if(fnEnd)fnEnd(); } else { if(attr=='opacity') { obj.style.filter='alpha(opacity:'+(cur+speed)+')'; obj.style.opacity=(cur+speed)/100; } else { obj.style[attr]=cur+speed+'px'; } } }, 30);}