var mouseX, mouseY;
document.onmousemove = function(e){ 
  if(!e){ 
    mouseX = event.x + (document.documentElement.scrollLeft);
    mouseY = event.y + (document.documentElement.scrollTop);
  }else{ 
    mouseX = e.clientX + window.pageXOffset;
    mouseY = e.clientY + window.pageYOffset;
  }
}


var timer;
window.onload = function()
{
  if(typeof(message) != "undefined")
  {
    obj = document.getElementById("messageBox");
    obj.innerHTML = message;
    obj.style.display = "block";
    timer = setTimeout("hideMessage()", 5000);
    obj.onclick = function()
    {
      hideMessage();
      clearTimeout(timer);
    }
  }
}

function hideMessage()
{
  document.getElementById("messageBox").style.display = "none";
}

function clearRelocate()
{
  document.location.href = "/";
}

var checkedObj = "checked";

function checkAll(formName)
{
  obj = document.forms[formName];
  for(i=0;i<obj.length;i++)
  {
    if(obj.elements[i].type == "checkbox")
    {
      obj.elements[i].checked = checkedObj;
    }
  }
  checkedObj = checkedObj == "checked" ? "" : "checked";
}

function showImage(id)
{
  if(hideTimer)
  {
    clearTimeout(hideTimer);
    hide2(tmpId);
  }
  obj = document.getElementById("kunst" + id);
  
  with(obj.style)
  {
    top = mouseY + 2 + "px";
    left = mouseX + 2 + "px";
  }
  obj.style.display = "block";
}
var hideTimer = false;
var tmpId;
function hideImage(id)
{
  hideTimer = setTimeout("hide2("+id+")", 200);
  tmpId=id;
}

function hide2(id)
{
  obj = document.getElementById("kunst" + id).style.display = "none";
}
function checkDate()
{
  d = parseInt(document.forms["formulier"].elements["uitleenStart[Date_Day]"].value, 10);
  m = parseInt(document.forms["formulier"].elements["uitleenStart[Date_Month]"].value, 10)+6;
  y = parseInt(document.forms["formulier"].elements["uitleenStart[Date_Year]"].value, 10);
  
  datum = new Date(y,m,d);
  
  dag = String(datum.getDate());
  dag = dag.length == 1 ? "0" + dag : dag;

  maand = String(datum.getMonth());
  maand = maand == 0 ? 12 : maand;
  maand = maand.length == 1 ? "0" + maand : maand;
  
  document.getElementById("uitleenEnd").innerHTML =  dag + "-" + maand + "-" + datum.getYear();
}