Index: core/admin_templates/incs/config_blocks.tpl
===================================================================
--- core/admin_templates/incs/config_blocks.tpl
+++ core/admin_templates/incs/config_blocks.tpl
@@ -36,6 +36,46 @@
 	<input type="hidden" id="<inp2:InputName field='$field'/>" name="<inp2:InputName field='$field'/>" value="<inp2:Field field='$field'/>"/>
 </inp2:m_DefineElement>
 
+<inp2:m_DefineElement name="config_edit_option_picker">
+		<option value="<inp2:m_param name='key'/>"><inp2:m_param name="option"/></option>
+</inp2:m_DefineElement>
+
+<inp2:m_DefineElement name="config_edit_picker">
+	<table style="width: 300px">
+		<tr>
+			<td>
+				<strong>
+					<inp2:m_phrase label="la_SelectedItems"/>
+				</strong>
+			</td>
+			<td>&nbsp;</td>
+			<td>
+				<strong>
+					<inp2:m_phrase label="la_AvailableItems"/>
+				</strong>
+			</td>
+		</tr>
+		<tr>
+			<td>
+				<select id="<inp2:InputName field='$field'/>_selected" tabindex="<inp2:m_get param='tab_index'/>" multiple="multiple" size="15" style="width: 200px">
+					<inp2:PredefinedOptions field="$field" block="config_edit_option_picker" selected="selected" selected_only="1"/>
+				</select>
+				<input type="hidden" id="<inp2:InputName field='$field'/>" name="<inp2:InputName field='$field'/>" value="<inp2:Field field='$field'/>"/>
+			</td>
+			<td align="center">
+				<input type="button" value="&nbsp;&laquo;&laquo;&nbsp;" onclick="move_selected('<inp2:InputName field='$field'/>_available', '<inp2:InputName field='$field'/>_selected'); select_sort('<inp2:InputName field='$field'/>_selected'); set_hidden_field('<inp2:InputName field='$field'/>', select_to_string('<inp2:InputName field='$field'/>_selected'));" class="button"><br>
+				<img src="img/s.gif" width="1" height="4" alt=""><br>
+				<input type="button" value="&nbsp;&raquo;&raquo;&nbsp;" onclick="move_selected('<inp2:InputName field='$field'/>_selected', '<inp2:InputName field='$field'/>_available'); select_sort('<inp2:InputName field='$field'/>_available'); set_hidden_field('<inp2:InputName field='$field'/>', select_to_string('<inp2:InputName field='$field'/>_selected'));" class="button">
+			</td>
+			<td>
+				<select id="<inp2:InputName field='$field'/>_available" tabindex="<inp2:m_get param='tab_index'/>" multiple="multiple" size="15" style="width: 200px">
+					<inp2:PredefinedOptions field="$field" block="config_edit_option_picker" selected="selected" unselected_only="1"/>
+				</select>
+			</td>
+		</tr>
+	</table>
+</inp2:m_DefineElement>
+
 <inp2:m_DefineElement name="config_edit_checkbox" field_class="">
 	<input type="hidden" id="<inp2:InputName field='$field'/>" name="<inp2:InputName field='$field'/>" value="<inp2:Field field='$field' db='db'/>">
 	<input tabindex="<inp2:m_get param='tab_index'/>" type="checkbox" id="_cb_<inp2:InputName field='$field'/>" name="_cb_<inp2:InputName field='$field'/>" <inp2:Field field="$field" checked="checked" db="db"/> class="<inp2:m_param name="field_class"/>" onclick="update_checkbox(this, document.getElementById('<inp2:InputName field="$field"/>'))">
Index: core/kernel/db/db_tag_processor.php
===================================================================
--- core/kernel/db/db_tag_processor.php
+++ core/kernel/db/db_tag_processor.php
@@ -1207,6 +1207,9 @@
 		if ( isset($params['selected_only']) && $params['selected_only'] ) {
 			$options = $this->getSelectedOptions($options, $selected_option_keys);
 		}
+		elseif ( isset($params['unselected_only']) && $params['unselected_only'] ) {
+			$options = $this->getUnselectedOptions($options, $selected_option_keys);
+		}
 
 		$column_changed = false;
 		$option_number = $column_number = 1;
@@ -1279,6 +1282,27 @@
 	}
 
 	/**
+	 * Returns only options, that have not been selected.
+	 *
+	 * @param array $options              All options.
+	 * @param array $selected_option_keys Selected options.
+	 *
+	 * @return array
+	 */
+	protected function getUnselectedOptions(array $options, array $selected_option_keys)
+	{
+		$ret = array();
+
+		foreach ( $options as $option_key => $option_title ) {
+			if ( !$this->isOptionSelected($option_key, $selected_option_keys) ) {
+				$ret[$option_key] = $option_title;
+			}
+		}
+
+		return $ret;
+	}
+
+	/**
 	 * Determines if given option is among selected ones.
 	 *
 	 * @param mixed $option_key           Option key.
@@ -2157,6 +2181,7 @@
 			case 'select':
 			case 'multiselect':
 			case 'radio':
+			case 'picker':
 				if ($object->GetDBField('DirectOptions')) {
 					// used for custom fields
 					$options = $object->GetDBField('DirectOptions');