<input type=button value='显示' onclick='ice.style.display=""'>
<input type=button value='隐藏' onclick='ice.style.display="none"'>
<table border=1>
<tr><td>sdfsdf</td></tr>
<tr id=ice style='display:none'><td>sdfsd</td></tr>
</table>
<input type=button value='隐藏' onclick='ice.style.display="none"'>
<table border=1>
<tr><td>sdfsdf</td></tr>
<tr id=ice style='display:none'><td>sdfsd</td></tr>
</table>
function tt(){ if(document.getElementById("myselect").value == "1"){
document.getElementById("myp1").style.visibility="visible"
document.getElementById("myp2").style.visibility="hidden"
}
else{
document.getElementById("myp1").style.visibility="hidden"
document.getElementById("myp2").style.visibility="visible"
}
}
</script>然后在按钮上加onclick=tt()
<tr id=myp1 style="VISIBILITY: visible">
<tr id=myp2 style="VISIBILITY: hidden">