Adding a custom button to the Builtin Button Group of an MVToolbar object.

Question

I suspect this is not possible, however, I would like to add a custom button to the built-in button group of an MVToolBar object. I have attempted to do this with the following code:
// Create an array of the built-in buttons I require
var toolArry = new Array();
toolArry.push(MVToolBar.BUILTIN_CIRCLE);
toolArry.push(MVToolBar.BUILTIN_RECTANGLE);
toolArry.push(MVToolBar.BUILTIN_REDLINE);
// Create the MVToolBar object using the array items created above
createLocToolBar = new MVToolBar("createLocShapes",toolArry,MVToolBar.HORIZONTAL);
// Add the Toolbar to the map view object
mapview.addToolBar(createLocToolBar);
// Create the required custom button
createLineBtn = new MVToolButton("createLine",MVToolButton.TOGGLE,"/i/blue_arrow_down.gif","/i/blue_arrow_up.gif");
// Attempt to add the custom button to the built-in toolbar
createLocToolBar.getBuiltInButtonGroup().add(createLineBtn);
Upon running the above script, the built-in buttons I've defined in the array are displayed as expected, but the custom button does not appear (no errors are displayed either).
If I comment out the above line and instead include the line below, the custom button is displayed, but of course this is not part of the built-in group.
createLocToolBar.addButton(createLineBtn);
Any assistance greatly appreciated,
JR

Answer 1

Thanks for the reply, Michael. I understand that the Login.jsp needs to be modified and redeployed, but the question is how to create a new button with the same look and feel as the Login button. Currently we have modified the Login.jsp with a "Forgot Password" html link, but it would be prefered to create a button to match what already exists. I understand that this might be outside the scope of this forum, but I was hoping that someone that has done this (specifically the original poster if he found a solution) could share the relevent code.