Custom Button on Joomla 2.5
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I added custom button on my view.html.php file of VIEW of my component  as :

JToolBarHelper::custom('addtrack', 'addtrack.png', 'addtrack_f2.png','Add Track', false);
JToolBarHelper::custom('edittrack', 'edittrack.png', 'edittrack_f2.png','Edit Track', false);

JToolBarHelper::custom('updatetrack', 'updatetrack.png', 'updatetrack_f2.png','Save Track', false);

but i dont know from where i can use this buttons, i mean i want to open my respective pages which i created under the same view.
"track_addtrack.php"

or i can do some part of work using this button.