EDIT

// $Id$

(function($){

 /**

  */

  $.fn.cdm_taxontree = function(options) {

    var opts = $.extend({},$.fn.cdm_taxontree.defaults, options);

		return this.each(function() {

	   /* ----------- magicbox ---------- */

      $(this).cdm_taxontree_magicbox();

		  /* ----------- tree browser ---------- */

			$(this).children('li').not('.invisible').click(function(event) {

				event.stopPropagation();

							var bg_image_tmp = parent_li.css('background-image');

							var bg_image_loading = bg_image_tmp.replace(/^(.*)(\/.*)(\))$/, '$1/loading_subtree.gif$3')

							parent_li.css('background-image', bg_image_loading);

							// load DOM subtree and append it

							$.get(url, function(html){

							  var tree_container = parent_li.parents('div.cdm_taxontree_container');

							  // restore scroll positions

                tree_container.children().scrollTop(tmp_scroller_y_left);

							});

						}

					$(this).removeClass('collapsed').addClass('expanded').children('ul').css('display', 'block');

				} else if($(this).hasClass('expanded')){

				  $(this).removeClass('expanded').addClass('collapsed').children('ul').css('display', 'none');

				}

			}); // END click()

			$(this).children('li').children('a').click(function(event) {

			 event.stopPropagation();

			});

			/* ----------- widget ------------------- */

			if(opts.widget){

        var widget = $(this).parents('.cdm_taxontree_widget');

        var optionList = widget.find('select');

        // keep all options unselected

        optionList.change(function(){

          $(this).children().removeAttr('selected');

        bind_select_click(optionList, $(this), opts.multiselect);

      }

		});

		function bind_select_click(optionList, treelist, isMultiselect){

     treelist.find('li .widget_select').click(function(event){

        event.stopPropagation();

           optionList.children().remove();

         }

         optionList.append('<option value="'+value+'">'+$(this).attr('title')+'</option>');

        }

       });

  } // END bind_select_click()

	}; // END cdm_taxontree()

})(jQuery);

$.fn.cdm_taxontree_container_resize = function() {

    var current_w = $(this).parent().width();

    var tree_list = $(this).find('.cdm_taxontree_scroller_y > ul');

    var w = tree_list.css('position', 'absolute').outerWidth({ margin: true });

    tree_list.css('position', 'static');

        return;

      }

    }

    if(current_w < w){

      $(this).parent().width(w);

      $(this).children().width(w);

 */

$.fn.cdm_taxontree_container_debug_size = function(msg) {

     + '<br />    scoll_x: ' + $(this).parent().width()

     + '<br />        container: ' + $(this).width()

     + '<br />            scoll_y: ' + $(this).children().width()

 *

 */

$.fn.cdm_taxontree_magicbox = function() {

  // exclude IE6 and lower versions

  if(!(jQuery.browser['msie'] && jQuery.browser['version'].charAt(0) < '7')){

		if(container[0] == undefined){

		  return;

		}

	  container.hover(

		  // --- mouseOver ---- //

			function() {

			  var scroller_x = $(this).parent();

			  var scroller_y = $(this).children('.cdm_taxontree_scroller_y');

			  var container =  scroller_x.parent();

			  var h = parseFloat(scroller_x.height());

			  var scroll_top = scroller_x.scrollTop();

			  var border_color = scroller_x.css('border-top-color');

			  // store scroll_left of scroller_x so that it can be restored on mouseOut

			  scroller_x.append('<div class="_scrollLeft" style="display: none;" title="'+scroller_x.scrollLeft()+'"></div>');

        var newWidth = $(this).cdm_taxontree_container_resize();

        if(scroller_x.hasClass('expand-left')){

			     var shift_left =  container.outerWidth({ margin: true }) - newWidth;

			  scroller_x.css('overflow-y', 'visible').css('overflow-x', 'visible').css('margin-left', shift_left).css('border-color', 'transparent').height(h);

			}

			// ----------------- //

			// --- mouseOut ---- //

			function() {

				var container = $(this);

				var scroller_x = $(this).parent('.cdm_taxontree_scroller_x');

				var scroller_y = container.children('.cdm_taxontree_scroller_y');

				var border_color = scroller_y.css('border-top-color');

				var scroll_top = scroller_y.scrollTop();

				scroller_y.css('overflow-y', 'visible').css('border-color', 'transparent');

				scroller_x.css('overflow-y', 'auto').css('margin-left', '0').css('border-color', border_color).width('auto').scrollTop(scroll_top);

				var scrollLeft = scroller_x.children('._scrollLeft').attr('title');

				scroller_x.scrollLeft(scrollLeft)

				scroller_x.children('._scrollLeft').remove();

		);

	}

	// END exclude IE6

}

$.fn.cdm_taxontree.defaults = {  // set up default options

  widget:                 false,         // true = enable widget mode

};

if (Drupal.jsEnabled) {

  $(document).ready(function() {

    $('ul.cdm_taxontree').cdm_taxontree();

  });

}