/////////////////////////////////////////////////////////////////////////////
// gebruik van Ajax

function vierkantswortel()
{
  http = createHTTPHandler();
  var getal = document.getElementById('input_vkw').value;
  var url = "index.php?ajaxpagina=vierkantswortel&getal=" + getal ;
  http.open("GET", url, true);
  http.onreadystatechange = handleHttpResponse_vkw;
  http.send(null);
}

function handleHttpResponse_vkw()
{
  if(http.readyState == 4)
  {
    var response = http.responseText;
    document.getElementById('response_vkw').innerHTML = response;
  }
}
///////////////////////////////////////

var regios = Array();
function provincie_clicked(regio)
  {
    
  }

var collapsed_divs = Array(                                             
                           0,   // dummy
                           1,   // Zoeken op regio
                           1,   // Zoeken op trefwoorden
                           1,   // Zoeken op studierichting
                           1    // Zoeken op ervaring
                           );

function collapse_expand(id, img)
  {
    var selected_div = document.getElementById('zoeken_visible_' + id);
    
    if (collapsed_divs[id] == 1)
      {
        collapsed_divs[id] = 0;
        selected_div.style.display = 'block';
        img.src="img/vacatures/collapse.gif";
      }
    else
      {
        collapsed_divs[id] = 1;
        selected_div.style.display = 'none';
        img.src="img/vacatures/expand.gif";
      }
  }