function $(id){return document.getElementById(id);}
function checkForm(frm, lang){
    var success=true;
    if(frm.town.selectedIndex==0){
        success=false;
        $('town_err').style.display='block';
    }
    else $('town_err').style.display='none';
    
    if($('types_list').selectedIndex==-1){
        success=false;
        $('type_err').style.display='block';
    }
    else $('type_err').style.display='none';
    
    if(frm.name.value.length <3){
        success=false;
        $('name_err').style.display='block';
    }
    else $('name_err').style.display='none';
    
    if(success)
        $('sbm_err').style.display='none';
    else $('sbm_err').style.display='block';
    
    if(success) {
        if(lang=='ru') $('btn_send').value= 'Отсылка ...';
        else if(lang=='he') $('btn_send').value= 'שליחה מתבצעת ...';
        else if(lang=='en') $('btn_send').value= 'Sending ...';
        $('btn_send').disabled = true;
    }
    return success;
}

function create_ajax(type, params, lang){
    var xmlhttp;
    if (window.XMLHttpRequest)  {  xmlhttp=new XMLHttpRequest();  }
    else if (window.ActiveXObject)  {  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); }
  
    xmlhttp.onreadystatechange=function() {
    if(xmlhttp.readyState==4) {
      if(type=='reg')
        build_cities(xmlhttp.responseText);
      }
    }
    var url = "/shared/content.php?action=filters&lang="+lang+"&"+params;
    xmlhttp.open("GET",url,true);
    xmlhttp.send(null);
}

function getCities(reg, lang){
    if(reg[reg.selectedIndex].value>0)  create_ajax('reg', 'reg='+reg[reg.selectedIndex].value, lang);
}
function build_cities(responseText){
    try{
        $('city').options.length = 0;
        eval(responseText);
    }
    catch(err){;}
}
function show_ethnics(ethn){
  window.location.href = 'search.php?types[]='+ethn;
}
function submit_search(frm, lang){
    if(lang=='ru' && frm.rest_name.value=="По названию ресторана") frm.rest_name.value="";
    else if(lang=='he' && frm.rest_name.value=="לפי שם מסעדה") frm.rest_name.value="";
    else if(lang=='en' && frm.rest_name.value=="By restaurant name") frm.rest_name.value="";
    return true;
}