How to remove insert image button from Yahoo Rich text editor

I am using ThickB开发者_Python百科ox 3.1 one one page.

Now, there is one problem,
i am using one form to open thickbox on the button click event.

And i am using yahoo text editor on that form.
And in the yahoo rich text editor there is one link of image insert.. but i don't know why its not opening. on click of it. the image insert dialog is not opening.

all things are working properly.

Why is it not opening?

and if is there anyway to only remove the image insert icon from text editor.

Probably, if you change setting on buttons block by removing insertimage

from

buttons: [ 
     { type: 'push', label: 'HTML Link CTRL + SHIFT + L', value: 'createlink', disabled: true }, 
     { type: 'push', label: 'Insert Image', value: 'insertimage' } 
] 

to

buttons: [ 
     { type: 'push', label: 'HTML Link CTRL + SHIFT + L', value: 'createlink', disabled: true }
] 

ref: http://developer.yahoo.com/yui/examples/editor/toolbar_editor.html