function setDefaultTextFocus(formObj, defText) {
  if (formObj.value == defText) {
    formObj.value = '';
  }
}
function setDefaultTextBlur(formObj, defText) {
  if (formObj.value == '') {
    formObj.value = defText;
  }
}
var active_forum = 0;
function changeForum(Forum_ID, Div_Obj) {
  var forumObj = document.getElementById(Forum_ID);
  if (forumObj.style.display == 'block') {
    forumObj.style.display = 'none';
    active_forum = 0;
  } else {
    forumObj.style.display = 'block';
    Div_Obj.active = "ja";
    active_forum = Forum_ID;
  }
}
function RefreshImage(valImageId) {
	var objImage = document.images[valImageId];
	if (objImage == undefined) {
		return;
	}
	var now = new Date();
	objImage.src = objImage.src.split('?')[0] + '?x=' + now.toUTCString();
}

function forumVoorwaarden() {
	day = new Date();
	id = day.getTime();
	window.open("/content/popup_voorwaarden.asp", id, 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=650,height=400');
} 

function textCounter(field, cntfield, maxlimit) {
  if (field.value.length > maxlimit) {
    field.value = field.value.substring(0, maxlimit);
  } else {
    cntfield.value = maxlimit - field.value.length;
  }
}