function filter(action,cat,model)
{producer_id=$('producers_list').options[$('producers_list').selectedIndex].value;url='/php/ajax.filter.php?action='+action+'&cat='+cat+'&id='+producer_id;new Ajax.Request(url,{method:'get',onSuccess:function(transport)
{json=eval('('+transport.responseText+')');switch(action)
{case'changeProducer':fillSelect(json.items,model);break;default:break;}}});}
function fillSelect(data,model)
{if(data.length>0)
{$('filter_models').disabled=false;$('filter_models').options.length=0;$('filter_models').options[0]=new Option("Все модели");$('filter_models').options[0].value="";for(i=1;i<data.length+1;i++)
{$('filter_models').options[i]=new Option(data[i-1]);if(data[i-1]==model)
{$('filter_models').options[i].selected=true;}}}else
{$('filter_models').options[0]=new Option("Все модели");$('filter_models').options[0].value="";$('filter_models').disabled=true;}}