function PopUp(url, width, height) {
  winW = width;
  winH = height;
  winL = screen.width / 2 - winW / 2;
  winT = screen.height / 2 - winH / 2;
  window.open(url,"_blank","width="+width+",height="+height+",top="+winT+",left="+winL+",scrollbars=yes,status=no,toolbar=no,menubar=no,location=no");
}

function CheckAvailability(id,state,location,ch) {
  var url='';
  url = '/CheckAvailability.asp?id_advertiser='+id+'&id_state='+state+'&id_location='+location+'&char='+ch;
  PopUp(url, 600, 500);
}

function ChangePage(page, item) {
  document.formular.Page.value=page;
  document.formular.submit();
}

function SendForm(item) {
  var state = document.formular.id_state.value;
  var region = document.formular.id_Locality.options[document.formular.id_Locality.selectedIndex].innerHTML;
  region = escape(region);

  if (item.id == 'id_state') {
    document.formular.Page.value=1;
    document.formular.id_Locality.value='*';
    document.formular.action += '?id_State=' + state;
  } else {
    document.formular.action += '?id_State=' + state + '&Region='+ region;
  }
  document.formular.submit();
}

function Sort(number) {
  document.formular.SortColumn.value = number;
  document.formular.submit();
}

function SortPage() {
  var sortBy = document.formular.sortBy.value;
  if (sortBy == 0) {
    document.formular.sortBy.value = 1;
  }
  else {
    document.formular.sortBy.value = 0;
  }
  document.formular.submit();
}

function SubmitByEnter(e){
    var keycode = e.keyCode;
    var ENTERKEYCODE = 13; 
    if(keycode == ENTERKEYCODE) {
        var txtSearchVal = document.formular.txtSearch.value;
        location.href = "Search.asp?Search=" + txtSearchVal;
    }
}