<script>
$(function(){
$.easing.def="easeInQuad";//設置默認效果
var callback=function (){
alert("ok");
}
$("#t1").animate({
"top":600
},{duration: 3000,
easing:"easeInQuad",//可省略
complete: callback})
})
</script>

<script>
var callback=function (){
alert("ok");
}
$("#t1").hide(3000,callback)
</script>