// jQuery Drop Menu Helper Plugin
(function($) {
	$.extend($.fn, {
		
		dropMenuHelper: function(o, callback) {
			
			if (o.menu == undefined) return false;
			if (o.inSpeed == undefined) o.inSpeed = 150;
			if (o.outSpeed == undefined) o.outSpeed = 75;
			if (o.inSpeed == 0) o.inSpeed = -1;
			if (o.outSpeed == 0) o.outSpeed = -1;
			
			o.menuConfigured = false;
			o.menuTop = 0;
			o.menuLeft = 0;
						
			$(this).each( function() {
				var el = $(this);
				
				// Get this context menu
                var menu = $('#' + o.menu);
				
                $(menu).click(function(){$(menu).fadeOut(o.outSpeed);})	
                
                $(document.body).mousedown(function(e) {
                    var target = $(e.target);		
				    if ((target.parents('#' + o.menu).length == 0) && !($.blockUI))
		            {
		                if (target.text() != $(menu).text())
		                    $(menu).hide()
		            }
                });
				
				$(this).click( function() {
				    if( $(el).hasClass('disabled') ) return false;
				    
				    if (!o.menuConfigured)
				    {
				        var offset = $(el).offset();
    				
				        $(menu).css({position:'absolute',display:'none'});
        		        
                        offset.top += $(el).height();
                        
                        var isFixed = false;
                        $(o).parents().each(function() {
                            isFixed |= $(this).css('position') == 'fixed';
                        });
                		
                        if (isFixed && $.browser.opera) { // correction for Opera when fixed and scrolled
                            offset.left -= document.documentElement.scrollLeft;
                            offset.top -= document.documentElement.scrollTop;
                        }
                        
                        o.menuTop = offset.top;
                        o.menuLeft = offset.left;
                        
                        o.menuConfigured = true;
                    }
				    
				    // Show the menu
				    $(document).unbind('click');
				    $(menu).css({top: o.menuTop, left: o.menuLeft}).fadeIn(o.inSpeed);				    			
				});
			});
			
			return $(this);
		},
		
		// Destroy context menu(s)
		destroyDropMenu: function() {
			// Destroy specified context menus
			$(this).each( function() {
				// Disable action
				$(this).unbind('click')
			});
			return( $(this) );
		}
		
	});
})(jQuery);