$.fn.onSubmit = function(disableList){
	
	if(disableList == null){var $list = 'input[type=submit],input[type=button],input[type=reset],button';}
	else{var $list = disableList;}
	
	// Makes sure button is enabled at start
	$(this).find($list).removeAttr('disabled');
	
	$(this).submit(function(){
        $(this).find($list).attr('disabled','disabled');
    });
	return this;
};