[color=darkred][/color]<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<script type="text/javascript">
function selectAll(obj) {
var chkFlag = (obj.checked)? true: false;
var chkList = document.getElementsByName("checkname");
if(chkList.length > 0) {
for (var i=0; i<chkList.length; i++) {
chkList[i].checked = chkFlag;
}
} else {
alert("请选中");
obj.checked = false;
return;
}
}
</script>
<BODY>
<input type='checkbox' name='checkname'/>1
<input type='checkbox' name='checkname' />2
<input type='checkbox' name='checkname' />3
<input type="checkbox" name="select" id="ck" οnclick="selectAll(this)"> selectAll
</BODY>
</HTML>
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