function getSub (standart_id){
	var subItem = subValues[standart_id];
	var subItemGr = subGroup[standart_id]
	if (standart_id == '') return;
	makeOptions(subItem,subItemGr);
}

function getItems(substr) {
	var parent='';
	if (substr == '') return;
	create_tbl(group[substr]);
}

function create_tbl(text) {
		document.getElementById("_crossrefs").innerHTML="";
		var params = text.split (":");
        var body = document.getElementById("_crossrefs");
        var tbl     = document.createElement("table");
        var tblBody = document.createElement("tbody");

        for (var j = 0; j < params.length-1; j++) {
            var row = document.createElement("tr");
            var values = params[j].split (",");
            for (var i = 0; i < 2; i++) {
                var cell = document.createElement("td");
                var cellText = document.createTextNode(values[i]);
                cell.appendChild(cellText);
                row.appendChild(cell);
            }
            tblBody.appendChild(row);
        }

        tbl.appendChild(tblBody);
        body.appendChild(tbl);
        tbl.setAttribute("border", "2");
        tbl.setAttribute("id", "cross_tbl");
}

function makeOptions(subItem,subItemGr){
	var subs=subItem.split (",");
	var rsubs=subItemGr.split (",");
	var lsubs = subs.length;
	var objSel = document.getElementById("_item_list");
	clearOptions(objSel);
    for (i = 0; i < lsubs; i++){
		addOption(objSel, subs[i], rsubs[i], true);
	}
}

function clearOptions(objSel){
	objSel.options.length = 0;
}

function addOption (oListbox, text, value, isDefaultSelected, isSelected)
{
  var oOption = document.createElement("option");
  oOption.appendChild(document.createTextNode(text));
  oOption.setAttribute("value", value);

  if (isDefaultSelected) oOption.defaultSelected = true;
  else if (isSelected) oOption.selected = true;

  oListbox.appendChild(oOption);
}