function set_comboboxes_states()
{
	formDataGrid.countryID1.disabled = formDataGrid.cityID1.value != -1 || formDataGrid.clubID1.value != -1 || formDataGrid.playerID1.value != -1;
	formDataGrid.cityID1.disabled = formDataGrid.countryID1.value != -1 || formDataGrid.clubID1.value != -1 || formDataGrid.playerID1.value != -1;
	formDataGrid.playerID1.disabled = formDataGrid.cityID1.value != -1 || formDataGrid.clubID1.value != -1 || formDataGrid.countryID1.value != -1;
	formDataGrid.clubID1.disabled = formDataGrid.countryID1.value != -1 || formDataGrid.cityID1.value != -1 || formDataGrid.playerID1.value != -1;

	formDataGrid.countryID2.disabled = formDataGrid.cityID2.value != -1 || formDataGrid.clubID2.value != -1 || formDataGrid.playerID2.value != -1;
	formDataGrid.cityID2.disabled = formDataGrid.countryID2.value != -1 || formDataGrid.clubID2.value != -1 || formDataGrid.playerID2.value != -1;
	formDataGrid.playerID2.disabled = formDataGrid.cityID2.value != -1 || formDataGrid.clubID2.value != -1 || formDataGrid.countryID2.value != -1;
	formDataGrid.clubID2.disabled = formDataGrid.countryID2.value != -1 || formDataGrid.cityID2.value != -1 || formDataGrid.playerID2.value != -1;
	
	formDataGrid.tournamentID.disabled = formDataGrid.beginDate.value != -1 || formDataGrid.endDate.value != -1;
	formDataGrid.beginDate.disabled = formDataGrid.tournamentID.value != -1;
	formDataGrid.endDate.disabled = formDataGrid.tournamentID.value != -1;
	
	formDataGrid.buttonSubmit.disabled = formDataGrid.cityID1.value == -1 && formDataGrid.countryID1.value == -1 && formDataGrid.clubID1.value == -1 && formDataGrid.playerID1.value == -1 &&
										 formDataGrid.cityID2.value == -1 && formDataGrid.countryID2.value == -1 && formDataGrid.clubID2.value == -1 && formDataGrid.playerID2.value == -1 &&
										 formDataGrid.tournamentID.value == -1 && formDataGrid.beginDate.value == -1 && formDataGrid.endDate.value == -1;
	
	if(formDataGrid.playerID1.value == formDataGrid.playerID2.value && formDataGrid.playerID2.value != -1)
	{
		formDataGrid.buttonSubmit.disabled = true;		
	}
	
	formDataGrid.buttonSkip.disabled = formDataGrid.buttonSubmit.disabled;
	
	if(formDataGrid.beginDate.value > formDataGrid.endDate.value && formDataGrid.beginDate.value != -1 && formDataGrid.endDate.value != -1)
	{
		formDataGrid.buttonSubmit.disabled = true;		
	}
}