numchecked = 0;
$("input[name=checkitem]").each(function() {
if(this.checked){
numchecked = 1;
numchecked++;
}
});
if(numchecked == 1){
if(numchecked > 0){
$("#requestany").prop("checked", false);
} else {
$("#requestany").prop("checked",true);
-