function check(field) {
	for (var i=0;i<document.wzv_search.length;++i) {
		if (document.wzv_search.elements[i].type == "checkbox" && document.wzv_search.elements[i].name.indexOf(field)==0) {
			document.wzv_search.elements[i].checked=true;
		}
	}
	return true;
}
function uncheck(field) {
	for (var i=0;i<document.wzv_search.length;++i) {
		if (document.wzv_search.elements[i].type == "checkbox" && document.wzv_search.elements[i].name.indexOf(field)==0) {
			document.wzv_search.elements[i].checked=false;
		}
	}
	return true;
}

function refreshIDList(id) {
		oldIDs = document.wzv_search.elements[0].value;
		if(oldIDs.indexOf(id)==-1) {
				if (oldIDs.indexOf(",")==-1) {
					newIDs = "0," + id;
				} else {
					newIDs = oldIDs + "," + id;
				}
		} else {
				oldIDs = oldIDs.replace(id,'');  
				newIDs = oldIDs.replace(',,',',');  
		}
		document.wzv_search.elements[0].value = newIDs;
		return true;
}