DataList中的CheckBox利用 javaScript实现全选

<script language="javascript" type="text/javascript">

<!--

function selectALL()

{

var table = document.getElementById("<%=this.DataList1.ClientID%>");

var checkes =table.getElementsByTagName("input");

for (var i = 0; i < checkes.length; i++)

{

if(checkes[i].type=="checkbox")

{

checkes[i].checked = true;

}

}

}

function selectNone()

{

var table = document.getElementById("<%=this.DataList1.ClientID%>");

var checkes =table.getElementsByTagName("input");

for (var i = 0; i < checkes.length; i++)

{

if(checkes[i].type=="checkbox")

{

checkes[i].checked = false;

}

}

}

//-->

</script>