// =============================
//  MACROMEDIA SWAP IMAGES
// =============================

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

// =============================
//  PROJECTIE DISPLAY FUNCTIONS
// =============================


/**
 * Displays an confirmation box (use before delete actions).
 * This function is called while clicking links, for example:
 *
 * @param   object   the link
 * @param   object   the warning message
 *
 * @return  boolean  whether to run the query or not
 */
function confirmLink(theLink, theMessage)
{

    var is_confirmed = confirm(theMessage);
    if (is_confirmed)
    {
        theLink.href += '&is_js_confirmed=1';
    }
    return is_confirmed;
}



/**
 * Flips the display status of an element by either removing it if it is displayed, or displaying it if it was removed.
 * This function is called while clicking on links or checking boxes:
 *
 * @param   object   the id of the element
 *
 */
function change_visibility(nr)
{
        if (document.layers)
        {
                current = (document.layers[nr].display == 'none') ? 'block' : 'none';
                document.layers[nr].display = current;
        }
        else if (document.all)
        {
            if (document.all[nr])
        {
                        current = (document.all[nr].style.display == 'none') ? 'block' : 'none';
                        document.all[nr].style.display = current;
        }
        }
        else if (document.getElementById)
        {
                visibility_status = (document.getElementById(nr).style.display == 'none') ? 'block' : 'none';
                document.getElementById(nr).style.display = visibility_status;
        }
}



function change_visibility_radio(object, show, hide)
{
    if (object.checked)
    {
        document.getElementById(show).style.display = "block";
        document.getElementById(hide).style.display = "none";
    } else {
        document.getElementById(show).style.display = "none";
        document.getElementById(hide).style.display = "block";
    }
}


/**
 * Counts the characters in the field CountField and makes sure its doesn't exceed the maximum Limit.
 * This function is called while entering text into a textarea field:
 *
 * @param   object   the id of the element
 *
 */
function charsLimit(charsToCount, CountField, Limit)
{
        if (charsToCount.value.length > Limit)
    {
                charsToCount.value = charsToCount.value.substring(0, Limit);
    }
    else
    {
                CountField.value = Limit - charsToCount.value.length;
    }
}


//JK Popup Window Script (version 3.0)- By JavaScript Kit (http://www.javascriptkit.com)
function openpopup(popurl){
var winpops=window.open(popurl,"","width=639,height=500,scrollbars,resizable")
}

//JK Popup Window Script (version 3.0)- By JavaScript Kit (http://www.javascriptkit.com)
function openpopup_frontend(popurl){
var winpops=window.open(popurl,"","width=639,height=650,scrollbars,resizable")
}

// =========================================
//  PROJECTIE BASE AJAX FUNCTIONS
// =========================================

function ajaxRead(file, tag)
{
    // make sure the ajax=true flag is always sent together with the request
    file = file + '&ajax=1';

    var xmlObj = null;
    if(window.XMLHttpRequest)
    {
        xmlObj = new XMLHttpRequest();
    } else if(window.ActiveXObject) {
        xmlObj = new ActiveXObject("Microsoft.XMLHTTP");
    } else {
        return;
    }

    xmlObj.onreadystatechange = function()
    {
        if(xmlObj.readyState == 4)
        {
            // only return respons text if a tag is given and is not a dummy, otherwise assume caller does not want return value
            if (tag != '' && tag != 'dummy')
            {
                document.getElementById(tag).innerHTML = xmlObj.responseText;
            }
        }
    }
    xmlObj.open ('GET', file, true);
    xmlObj.send ('');
}


function ajaxPost(url, parameters, elementid)
{
  var xmlObj = null;
  if(window.XMLHttpRequest)
  {
      xmlObj = new XMLHttpRequest();
  } else if(window.ActiveXObject)
  {
      xmlObj = new ActiveXObject("Microsoft.XMLHTTP");
  } else {
      return;
  }
  xmlObj.onreadystatechange = function(){
    if(xmlObj.readyState == 4)
    {
        document.getElementById(elementid).innerHTML = xmlObj.responseText;
    }
    }
    xmlObj.open ('POST', url, true);
    xmlObj.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    xmlObj.setRequestHeader("Content-length", parameters.length);
    xmlObj.setRequestHeader("Connection", "close");
    xmlObj.send(parameters);
  }

// =========================================
//  PROJECTIE FIREFOX COMPATIBILTY FUNCTIONS
// =========================================


function getNextSibling(startBrother) {
  endBrother=startBrother.nextSibling;
  while(endBrother.nodeType!=1){
    endBrother = endBrother.nextSibling;
  }
  return endBrother;
}

function getPreviousSibling(startBrother) {
  endBrother=startBrother.previousSibling;
  while(endBrother.nodeType!=1){
    endBrother = endBrother.previousSibling;
  }
  return endBrother;
}

// =========================================
//  PROJECTIE MEDIA LIBRARY FUNCTIONS
// =========================================

function delete_media(object, media_id)
{
    string = location.href;
    var first  = string.indexOf("&");
    var linkje = string.substring(0,first);

    var answer = confirm("Bestand verwijderen?");

    if (answer)
    {
        document.getElementById(media_id).style.display = 'none';
        ajaxRead(linkje+'&action=delete_media&media_id='+object.value, 'dummy');
    } else {
        object.checked = false;
    }
}



function delete_child_media(object, media_id)
{
    string = location.href;
    var first  = string.indexOf("&");
    var linkje = string.substring(0,first);

    var answer = confirm("Bestand verwijderen?");

    if (answer)
    {
        document.getElementById(media_id).style.display = 'none';
        ajaxRead(linkje+'&action=delete_child_media&media_id='+object.value, 'dummy');
    } else {
        object.checked = false;
    }
}

var counter = 0;

function new_upload_image_field(parent)
{
    _new_upload_field(parent, 'image');
}

function new_upload_field(parent)
{
    _new_upload_field(parent, 'media');
}

function _new_upload_field(parent, type)
{
    //parent.style.border = "solid black 10px";
    //alert(parent.id);

    // counter is only used to increment the file-input field name
    counter++;

    // parent of the upload field
    //var parent = document.getElementById('media');

    // this is the div that is going to be copied
    var firstChild_div = (navigator.appName == "Microsoft Internet Explorer") ? parent.firstChild.firstChild : parent.firstChild.nextSibling.firstChild.nextSibling;

    // the new div will be inserted BEFORE this div
    var insert_child_before = parent.lastChild.previousSibling;

    // create the new div
    var new_div = document.createElement('div');
    new_div.id = "copy"+counter;
    // content of the new div, with a link that will delete this div
    new_div.innerHTML = firstChild_div.nextSibling.nextSibling.innerHTML + "<input type='button' onClick = 'remove_upload_field(this.parentNode.parentNode,this.parentNode);' value='Verwijder veld' class='form small' style='height: 22px;' />";

    // loop through all elements of the new div and change the name of the upload field
    var len = new_div.childNodes.length;
    for(var i = 0; i < len; i++)
    {
        if(new_div.childNodes[i].type == "file")
        {
            // new name of the upload field
            new_div.childNodes[i].name = type+"_files[" + counter + "_copy]";
        }

        if(new_div.childNodes[i].id == type+"_name_field")
        {
            new_div.childNodes[i].value = "";
            new_div.childNodes[i].name = type+"_name[" + counter + "_copy]";
        }
    }

    // finally, insert the new div
    parent.insertBefore(new_div, insert_child_before);
}

function remove_upload_field(parent, object)
{
    parent.removeChild(object);

}



/***********************************************
* Gradual Highlight image script- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/

var baseopacity=60

function slowhigh(which2){
imgobj=which2
browserdetect=which2.filters? "ie" : typeof which2.style.MozOpacity=="string"? "mozilla" : ""
instantset(baseopacity)
highlighting=setInterval("gradualfade(imgobj)",50)
}

function slowlow(which2){
cleartimer()
instantset(baseopacity)
}

function instantset(degree){
if (browserdetect=="mozilla")
imgobj.style.MozOpacity=degree/100
else if (browserdetect=="ie")
imgobj.filters.alpha.opacity=degree
}

function cleartimer(){
if (window.highlighting) clearInterval(highlighting)
}

function gradualfade(cur2){
if (browserdetect=="mozilla" && cur2.style.MozOpacity<1)
cur2.style.MozOpacity=Math.min(parseFloat(cur2.style.MozOpacity)+0.1, 0.99)
else if (browserdetect=="ie" && cur2.filters.alpha.opacity<100)
cur2.filters.alpha.opacity+=10
else if (window.highlighting)
clearInterval(highlighting)
}



/**
 *
 * @access public
 * @return void
 **/
function show_picture(object, media_id)
{
    if (navigator.appName == "Microsoft Internet Explorer")
    {
        var first_element = object.firstChild;
        var second_element = document.getElementById('head_image').firstChild;
    } else {
        var first_element = object.firstChild.nextSibling;
        var second_element = document.getElementById('head_image').firstChild.nextSibling;
    }

    var first_src = first_element.src;
    var second_src = second_element.src;

    // first_src moet geen thumbnail worden
    first_src = first_src.replace("thumbnail_", "");

    // second_src moet wel thumbnail zijn
    second_src = second_src.replace("products/", "products/thumbnail_");

    first_element.src = second_src;
    second_element.src = first_src;
}

/**
 *
 * @access public
 * @return void
 **/
function premium_selection(url, tag)
{
    ajaxRead(url, tag);
}