function?startMove(obj,attr,iTarget){
	clearInterval(obj.timer);
	obj.timer=setInterval(function(){
		var?icur=0;
		if(attr=='opacity'){
			icur=Math.round(parseFloat(getStyle(obj,attr))*100);
		}else{
			icur?=?parseInt(getStyle(obj,attr));
		}

		var?speed=(iTarget-icur)/8;
		speed=speed>0?Math.ceil(speed):Math.floor(speed);

		if(icur?==?iTarget){
			clearInterval(obj.timer);
		}else{
			if(attr=='opacity'){
				obj.style.filter?=?'alpha(opacity:'+(icur+speed)+')';
				obj.style.opacity=(icur+speed)/100;
			}else{
				obj.style[attr]=icur+speed+'px';
			}
			
		}
	},30)

}}

icur=Math.round(parseFloat(getStyle(obj,attr))*100); ?

這句話只判斷火狐瀏覽器，沒有判斷ie，、

是不是我理解的這樣？