marker alle checkbokse

<script type="text/javascript">
function hest(cb){
elm = document.forms['formnavn'].elements;
for(i=0;i<elm.length;i++){
  if (elm[i].type == "checkbox"){
  elm[i].checked = cb;
  }
}
}
</script>

<form name="formnavn">
<input type="checkbox" name="delete[]" value="1">
<input type="checkbox" name="delete[]" value="2">
<input type="checkbox" name="delete[]" value="3">
<input type="checkbox" name="delete[]" value="4">
<input type="checkbox" onclick="hest(this.checked);">
</form>

lav et svar :)

yup ;)