Event handler

Event handler

Newbie alert!!!
 
I understood the following example...(attach a handler function to the click event of all dropdown boxes)
 
jQuery('select').bind( 'click', function(e){alert('Clicked');} );
 
But don't understand why this doesn't work...
 
jQuery('select').bind( 'OnChange', function(e){alert('Changed');} );
 
I guess "OnChange" is not really an "event" per se?