function update(e, dd) {
	for (j=1; j < dd.length; j++) {
		dd[j][0] = true;
	}

	for (j=1; j < dd[0].length; j++) {
		for (i=1; i < dd.length; i++) {
			current = dd[i][j].split("|");
			value = current[0];
			choice = current[0];
			if (current.length == 2) choice = current[1];
			if (value != document[dd[0][0]][dd[0][j]][document[dd[0][0]][dd[0][j]].selectedIndex].value) dd[i][0] = false;
		}
		if (e == document[dd[0][0]][dd[0][j]]) {
			dropdown( j+1, dd);
			for (k=j+2; k < dd[0].length; k++) {
				document[dd[0][0]][dd[0][k]].length = 0;
			}
			break;
		}
	}
}

function dropdown(item,dd) {
	var pre1 = "";
	var j = 1;
	document[dd[0][0]][dd[0][item]].options.length = 0;
	document[dd[0][0]][dd[0][item]].options[0] = new Option(queryString('L') == 1 ? '-- please select --' : '-- Bitte wählen --', '');
	document[dd[0][0]][dd[0][item]].options[0].selected = true;
	for (i=1; i < dd.length; i++) {
		if (dd[i][0] || item == 1) {
			current = dd[i][item].split("|");
			value = current[0];
			choice = current[0];
			if (current.length == 2) choice = current[1];
			if (value != pre1) {
				var op = new Option(choice, value);
				document[dd[0][0]][dd[0][item]].options[j] = op;
				j++;
				pre1 = value;
			}
		}
	}
}

function queryString(parameter) { 
  var loc = location.search.substring(1, location.search.length);
  var param_value = false;

  var params = loc.split("&");
  for (i=0; i<params.length;i++) {
      param_name = params[i].substring(0,params[i].indexOf('='));
      if (param_name == parameter) {
          param_value = params[i].substring(params[i].indexOf('=')+1)
      }
  }
  if (param_value) {
      return param_value;
  }
  else {
      return false; //Here determine return if no parameter is found
  }
}