Type.registerNamespace("Sys.Extended.UI.HtmlEditor.ToolbarButtons"); Sys.Extended.UI.HtmlEditor.ToolbarButtons.EditorToggleButton = function(element) { Sys.Extended.UI.HtmlEditor.ToolbarButtons.EditorToggleButton.initializeBase(this, [element]); } Sys.Extended.UI.HtmlEditor.ToolbarButtons.EditorToggleButton.prototype = { onEditPanelActivity: function() { Sys.Extended.UI.HtmlEditor.ToolbarButtons.EditorToggleButton.callBaseMethod(this, "onEditPanelActivity"); this.setActivity(this.checkState()); }, checkState: function() { if(!this.checkRangeInDesign()) return false; return true; } } Sys.Extended.UI.HtmlEditor.ToolbarButtons.EditorToggleButton.registerClass("Sys.Extended.UI.HtmlEditor.ToolbarButtons.EditorToggleButton", Sys.Extended.UI.HtmlEditor.ToolbarButtons.DesignModeImageButton);