var menuId = 0;
var oldIE = false;
var emailRegExp = /^[A-Z0-9\._\-]+@([A-Z0-9\.\-]+\.)+[A-Z]{2,4}$/i;
var message = false;

/*
window.onload = function()
{
  if(navigator.userAgent.indexOf("MSIE") > 0 && navigator.userAgent.indexOf("Opera") < 0)
  {
    theMenu = document.getElementById("menu");
    
    var w=140;if(navigator.userAgent.indexOf("MSIE 6") < 0){lis = theMenu.getElementsByTagName("a");for(i=0;i<lis.length;i++){if(lis[i].className!="tmp"){lis[i].style.width=w+"px";}}}
    
    lis = theMenu.getElementsByTagName("li");
    for(i=0;i<lis.length;i++)
    {
      lis[i].id = "menu" + menuId;
      menuId++;
      lis[i].onmouseover = function()
      {
        this.className = this.className + "over";
      }
      
      lis[i].onmouseout = function()
      {
        this.className = this.className == "over" ? "" : "sel";
      }
      
    //}
  }
}
*/
function show(obj)
{
  items = obj.getElementsByTagName("ul");
  if(items.length > 0)
  {
    items[0].style.display = "block";
  }
}
function hide(obj)
{
  obj.style.backgroundColor = "";
  items = obj.getElementsByTagName("ul");
  if(items.length > 0)
  {
     items[0].style.display = "none";
  }
}
function showHide(what, how)
{
  obj = document.getElementById(what);
  if(how == "toggle") {
    obj.style.display = (obj.style.display == "none") ? "block" : "none";
    return false;
  } else {
    obj.style.display = how ? "block" : "none";
  }
}


function setSampleText(id, sampletext) {
    if (field = document.getElementById(id)) {
        if (field.value != '') {
            return;
        }
        field.value = sampletext;
        field.className = 'sampletext';
    }
}

function clearSampleText(sender) {
    if (sender.className == 'sampletext') {
        sender.className = '';
        sender.value = '';
    }
}

function validateTellafriend() {
	var email = document.getElementById('tellafriendemail').value;
    if ((email.length < 6) || (!emailRegExp.test(email))) {
    	alert('U heeft geen of een ongeldig email van uw collega ingevuld');
    	return false;
    }
    return true;
}

function showAlerts() {
	if (message) {
		alert(message);
	}
}