function set_checkboxes(group_name){



	i = 0;

	do{

		elem = getElem("id",group_name + "_" + i,null);

		if(elem && (typeof(elem) == 'object')) elem.checked = true;

		i++;

	}

	while(elem && (typeof(elem) == 'object'));



}



function clear_checkboxes(group_name){



	i = 0;

	do{

		elem = getElem("id",group_name + "_" + i,null);

		if(elem && (typeof(elem) == 'object')) elem.checked = false;

		i++;

	}

	while(elem && (typeof(elem) == 'object'));

}