function SelectModel()
{
	brandID = $('#brand_id').val();

	if( brandID > 0 )
	{  
		$('#model_text').hide();
		$('#model_select').show();
		$('#cost_text').hide();
		$('#cost_select').show();
		$('#model_select').html('<select name="model_id" id="model_id" class="forms-03"><option value="0">загрузка...</option></select>');
		$('#model').val('');
		$('#cost_val').val('');
		
		$.ajax({
	       data: { brandid: brandID, getmodels: 'y' },
	       dataType: "script",
	       cache: false,
	       url: "/functions/ajax.php"
	    });
	}
	else if( brandID == 0 )
	{
		$('#model_select').html('<select name="model_id" id="model_id" class="forms-03"><option value="0">выберите модель</option></select>');
		$('#cost_select').html('<select name="cost" id="credit_cost" class="forms-03"><option value="">выберите комплектацию</option></select>');
	}
	else
	{
		$('#brand_select').hide();
		$('#brand_text').show();
		$('#model_select').hide();
		$('#model_text').show();
		$('#cost_select').hide();
		$('#cost_text').show();
		$('#brand_id').val('0');
		$('#model_id').val('0');
		$('#credit_cost').val('');
	}
}

function SelectCost()
{
	modelID = $('#model_id').val();
		
	if( modelID > 0 )
	{  
		$('#cost_text').hide();
		$('#cost_select').show();
		$('#cost_select').html('<select name="cost" id="credit_cost" class="forms-03"><option value="">загрузка...</option></select>');
		$('#cost_val').val('');
		
		$.ajax({
	       data: { modelid: modelID, getcosts: 'y' },
	       dataType: "script",
	       cache: false,
	       url: "/functions/ajax.php"
	    });
	}
	else if( modelID == 0 )
	{
		$('#cost_select').html('<select name="cost" id="credit_cost" class="forms-03"><option value="">выберите комплектацию</option></select>');
	}
	else
	{
		$('#model_select').hide();
		$('#model_text').show();
		$('#cost_select').hide();
		$('#cost_text').show();
		$('#model_id').val('0');
		$('#credit_cost').val('');
	}
}

function ShowCostText()
{
	var cost = $('#credit_cost').val();
	if( cost == '-1' )
	{
		$('#cost_select').hide();
		$('#cost_text').show();
		$('#credit_cost').val('');
	}
}