js渐变显示渐变消失示例代码

function showAccomplishmentTableRow(){
$("#accomplishmenttable tr:hidden").first().show(2000,function(){
showAccomplishmentTableRow();
});
if($("#accomplishmenttable tr:hidden").size()==0){
$("#accomplishmenttable").next().attr("onclick","hideAccomplishmentTableRow()").text("Less");
}
}
function hideAccomplishmentTableRow(){
if($("#accomplishmenttable tr:visible").size()<=3){
$("#accomplishmenttable").next().attr("onclick","showAccomplishmentTableRow()").text("More");
return;
}

$("#accomplishmenttable tr:visible").last().hide(2000,function(){
hideAccomplishmentTableRow();
});

}

<table id="accomplishmenttable" class="bgWhite border3PGreye7e7e7 marginT20 roundedCorner width100P">
<tbody>
<tr class="bgLightGreyf5f5f5 height40">
<th class="border_bottom3Pgreye7e7e7 border_right1Pgreye7e7e7 border_top1PWhite fontGreyGeneral textCenter roundedCorner_TL verticalMiddle width30P" colspan="2">MY ACCOMPLISHMENTS</th>
</tr>

<tr class="bgWhite height40">
<td class="border_bottom1Pgreye7e7e7 border_right1Pgreye7e7e7 fontGreyGeneral p14Font width20P">
<div class="margin5">border_bottom1Pgreye7e7e7</div>
</td>
<td class="border_bottom1Pgreye7e7e7 border_right1Pgreye7e7e7 fontGreyGeneral p14Font textLeft width80P">
border_bottom1Pgreye7e7e7
</td>
</tr>
<tr class="bgWhite height40">
<td class="border_bottom1Pgreye7e7e7 border_right1Pgreye7e7e7 fontGreyGeneral p14Font width20P">
<div class="margin5">border_bottom1Pgreye7e7e7</div>
</td>
<td class="border_bottom1Pgreye7e7e7 border_right1Pgreye7e7e7 fontGreyGeneral p14Font textLeft width80P">
border_bottom1Pgreye7e7e7
</td>
</tr>
</tbody>
</table>
<div class="floatR marginT5 p14Font textLink" onclick="showAccomplishmentTableRow();">More</div>