function scegli(id){

	var checkedCount=0;
	var uncheckCount=0;
	var items = $j("." + id);
	for(i=0; i<items.length; i++){
		if($j(items[i]).attr('checked')=='checked'){
			checkedCount++;
		}else{
			uncheckCount++;
		}
	}
	if(checkedCount==items.length){
		$j('#'+ id).prop({
			indeterminate: false,
			checked: true
		});
	}else if(uncheckCount==items.length){
			$j('#'+ id).prop({
			indeterminate: false,
			checked: false
		});
	}else{
			$j('#'+ id).prop({
			indeterminate: true,
			checked: false
		});
			var parentId = "#" + $j('#'+ id).prop("class");

			$j(parentId).prop({
			indeterminate: true,
			checked: false
			});
	}


}

function initCheckboxes(){
	var groups = $j(".chkgroups");
	for(var j=0;j<groups.length; j++){
		scegli(groups[j].id);
	}
	scegli("chkgroups");
}