js页面复选框

<td colspan="6"><strong>事件状态：</strong>
        <input type="checkbox" value="" onClick="selectAll(this.checked)" style="border:0; background:none;"/>
        &nbsp;<strong>全选</strong>
<g:if test="${state != null }"> &nbsp;<input style="border:0; background:none;" type="checkbox" name="state" value="${UEvent.STATE_NEW }" <g:if test="${Arrays.binarySearch(state, UEvent.STATE_NEW) >= 0}">checked="checked"</g:if> />&nbsp;<strong>

<script>
<input type="checkbox" value="" onClick="selectOther()" style="border:0; background:none;"/>
        &nbsp;<strong>反选</strong> &nbsp;
        <g:hiddenField name="eventMark" value="${eventMark}"/>
        <input type="submit" class="searchb" value="搜索" /></td>

function selectAll(checked){
var ss = document.getElementsByName('state');
for(var i = 0, length = ss.length;i < length; i++){
if(checked){
ss[i].checked='checked';
}else{
ss[i].checked= false;
}
}
}
function selectOther(){
var ss = document.getElementsByName('state');
for(var i = 0, length = ss.length; i < length; i++){
if(ss[i].checked){
ss[i].checked = false;
}else{
ss[i].checked='checked';
}
}
}</script>1