/**
 * skip link highlight - jQuery plugin for accessible, unobtrusive highglighting of skip link targets
 * Inspired by http://stockholm.se/
 * @requires jQuery v1.2.6
 * Usage:
 * $("a").skipnavHighlight();
 *
 * http://blog.ginader.de
 *
 * Copyright (c) 2007 Dirk Ginader (ginader.de)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * Version: 1.0
 */
(function($) {
    $.fn.extend({
        showSkipTargetHighlight : function(o){
            var el = $( $(o).attr('href') );
			
            var pos = el.offset();
			
            this.targetOverlay.css({top:pos.top,left:pos.left,width:el.width(),height:el.height()}).show();
        },
        
		skipnavHighlight: function(conf) {
            var defaults = {
                targetClass: 'skiptarget' // Classname to apply to the element the anchor points to
            };
            var options = $.extend(defaults, conf);
            var o = this;
			
            if(!this.targetOverlay){
                this.targetOverlay = document.createElement('div');
                this.targetOverlay.className = options.targetClass;
                $('body').append(this.targetOverlay); /*apend will always put something at the end of the body. prepend at the beginning */

                this.targetOverlay = $( this.targetOverlay ).hide();
                this.targetOverlay.mousedown(function(){/* this enables the user to still select links within the div which has effectively been overlaid. mousedown will be faster for the user, registers the moment the mouse is pressed down rather than click which is the moment it goes up*/
                    o.targetOverlay.hide();
                });
            }
            return this.each(function() {
                $(this).hover(
                    function() {
                        o.showSkipTargetHighlight($(this));
                    },function() {
                        o.targetOverlay.hide();
                    }
                );
				
				
                $(this).focus(function () {
                    o.showSkipTargetHighlight($(this));
                });
                $(this).blur(function () {
                    o.targetOverlay.hide();
                });                
            });
        }
    });
})(jQuery);// JavaScript Document