function program_add(button, id){
	$.get('./?add_program=1&id='+id,
			  function(data){
			    if(data == 'OK') $(button).replaceWith('<input type="button" onclick="program_remove(this, '+id+')" value="Remove from personal shedule" />');
			  });

}

function program_remove(button, id){
	$.get('./?remove_program=1&id='+id,
			  function(data){
			    if(data == 'OK') $(button).replaceWith('<input type="button" onclick="program_add(this, '+id+')" value="Add to personal shedule" />');
			  });

}