function str_replace(search, replace, subject) {
  return subject.split(search).join(replace);
}

function get_contents(){
  var aReturn = new Array(3);
  aReturn[0] = false; // has_content
  aReturn[1] = '';    // content
  
  var oIFrame = document.getElementById("newsletteriframe");
  //var sContent = oIFrame.contentWindow.document.body.innerHTML;
  var oTdnns = oIFrame.contentWindow.document.getElementById("nns");
  if(!oTdnns) return aReturn;
  
  var sTdcontent = oTdnns.innerHTML;
  var regSpan   = /<span[^>]+>(.*)<\/span>/i;
  var aMessage = regSpan.exec(sTdcontent);
  if( aMessage ){
    aReturn[0] = true; // has_content
    if( aMessage[1].substr(0, 34) == 'Es gab einen Fehler beim Eintragen' ){
      aReturn[1] = aMessage[1] + '<br />Bitte wenden Sie sich an <a href="mailto:anmeldung@norma24.de">anmeldung@norma24.de</a>.';
    }else{
      aReturn[1] = aMessage[1] + '<br />Bitte gehen Sie <a href="javascript:toggleDisplays()">zurück zum Formular</a><br />und korrigieren Sie ihre Eingaben.';
    }
    return aReturn;
  }
  
  aReturn[0] = true; // has_content
  aReturn[1] = str_replace('NORMA-Newsletter-Service<br><br>','',sTdcontent); // content
  return aReturn; // Info
}

function toggleDisplays(){
  var oFormcontent = document.getElementById("div_formcontent");
  var oMsgcontent = document.getElementById("div_msgcontent");
  if(oFormcontent.style.display == ''){
    oFormcontent.style.display = 'none';
    oMsgcontent.style.display = '';
  }else{
    oFormcontent.style.display = '';
    oMsgcontent.style.display = 'none';
  }
}

function checkiframe(){
  aIframecontent = get_contents();
  bHasContent = aIframecontent[0]; 
  sContent = aIframecontent[1]; 
  
  var oFormcontent = document.getElementById("div_formcontent");
  var oMsgcontent = document.getElementById("div_msgcontent");
  var oP = document.getElementById("p_msgcontent");
  
  if(bHasContent){
    oP.innerHTML = sContent;
    toggleDisplays();
  }else oP.innerHTML='';
}


/********************************************************
For more info & download: http://www.ibegin.com/blog/p_ibox.html
Created for iBegin.com - local search done right
MIT Licensed Style
*********************************************************/
var indicator_img_path = "/2010/ibox/images/indicator.gif";
var indicator_img_html = "<img name=\"ibox_indicator\" src=\""+indicator_img_path+"\" alt=\"Einen Moment bitte...\" />"; // don't remove the name
var close_img_path = "/2010/ibox/images/close.gif";

var opacity_level = 4; // how transparent our overlay bg is; default=8
var ibAttr = "rel";   // our attribute identifier for our iBox elements
  

var imgPreloader = new Image(); // create an preloader object
function init_ibox() {
  var elem_wrapper = "ibox";
  
  createIbox(document.getElementsByTagName("body")[0]); //create our ibox

  //  elements here start the look up from the start non <a> tags
  //var docRoot = (document.all) ? document.all : document.getElementsByTagName("*");
  
  // Or make sure we only check <a> tags
  var docRoot = document.getElementsByTagName("a");

  var e;
  for (var i = 0; i < docRoot.length - 1; i++) {
      e = docRoot[i];
      if(e.getAttribute(ibAttr)) {
        var t = e.getAttribute(ibAttr);
        if ((t.indexOf("ibox") != -1)  ||  t.toLowerCase() == "ibox") { // check if this element is an iBox element
            e.onclick = function() { // rather assign an onclick event
              var t = this.getAttribute(ibAttr);
              var params = parseQuery(t.substr(5,999));
              var url = this.href;
              if(this.target != "" && this.target.substr(0,1) != "_") {url = this.target} 
  
              var title = this.title;

              if(showIbox(url,title,params)) {
                showBG();
                window.onscroll = maintPos;
                window.onresize = maintPos;
              }
              return false;
            }; 
            
        }
      }
     }
}

showBG = function() {
  var box_w = getElem('ibox_w');
  

  box_w.style.opacity = 0;
  box_w.style.filter = 'alpha(opacity=0)';
  setBGOpacity = setOpacity;
  for (var i=0;i<=opacity_level;i++) {setTimeout("setIboxOpacity('ibox_w',"+i+")",70*i);} // from quirksmode.org
  
    
  box_w.style.display = "";
  var pagesize = new getPageSize();
  var scrollPos = new getScrollPos();
  var ua = navigator.userAgent;
  
  if(ua.indexOf("MSIE ") != -1) {box_w.style.width = pagesize.width+'px';} 
  /*else {box_w.style.width = pagesize.width-20+'px';}*/ // scrollbars removed! Hurray!
  box_w.style.height = pagesize.height+scrollPos.scrollY+'px';

}

hideBG = function() {
  var box_w = getElem('ibox_w');
  box_w.style.display = "none";

}

var loadCancelled = false;
showIndicator = function() {
  var ibox_p = getElem('ibox_progress');
  ibox_p.style.display = "";
  posToCenter(ibox_p);
  ibox_p.onclick = function() {hideIbox();hideIndicator();loadCancelled = true;}
}


hideIndicator = function() {
  var ibox_p = getElem('ibox_progress');
  ibox_p.style.display = "none";
  ibox_p.onclick = null;
}

createIbox = function(elem) {
  // a trick on just creating an ibox wrapper then doing an innerHTML on our root ibox element
  var strHTML = "<div id=\"ibox_w\" style=\"display:none;\"></div>";
  strHTML +=  "<div id=\"ibox_progress\" style=\"display:none;\">";
  strHTML +=  indicator_img_html;
  strHTML +=  "</div>";
  strHTML +=  "<div id=\"ibox_wrapper\" style=\"display:none\">";
  strHTML +=  "<div id=\"ibox_content\"></div>";
  strHTML +=  "<div id=\"ibox_footer_wrapper\"><div valign=\"top\" id=\"ibox_close\" class=\"float_right\">";
  strHTML +=  "    <a id=\"ibox_close_a\" href=\"javascript:void(null);\" >Schließen</a> <a id=\"ibox_close_img_a\" href=\"javascript:void(null);\" ><img src=\""+close_img_path+"\" border=\"0\"></a></div>";
  strHTML +=  "<div id=\"ibox_footer\">&nbsp;</div>";
  strHTML +=  "</div></div></div>";

  var docBody = document.getElementsByTagName("body")[0];
  var ibox = document.createElement("div");
  ibox.setAttribute("id","ibox");
  ibox.style.display = '';
  ibox.innerHTML = strHTML;
  elem.appendChild(ibox);
}

var ibox_w_height = 0;
showIbox = function(url,title,params) {
  
  var ibox = getElem('ibox_wrapper');
  var ibox_type = 0;
  
  // set title here
  var ibox_footer = getElem('ibox_footer');
  if(title != "") {ibox_footer.innerHTML = '» '+title+' «';} else {ibox_footer.innerHTML = "&nbsp;";}
  //ibox_footer.innerHTML+= ' schließen per [Esc]';
  
  // file checking code borrowed from thickbox
  var urlString = /\.jpg|\.jpeg|\.png|\.gif|\.html|\.htm|\.php|\.cfm|\.asp|\.aspx|\.jsp|\.jst|\.rb|\.rhtml|\.txt/g;
  
  var urlType = url.match(urlString);

  if(urlType == '.jpg' || urlType == '.jpeg' || urlType == '.png' || urlType == '.gif'){
    ibox_type = 1;
  } else if(url.indexOf("#") != -1) {
    ibox_type = 2;
  } else if(urlType=='.htm'||urlType=='.html'||urlType=='.php'||
       urlType=='.asp'||urlType=='.aspx'||urlType=='.jsp'||
       urlType=='.jst'||urlType=='.rb'||urlType=='.txt'||urlType=='.rhtml'||
       urlType=='.cfm') {
    ibox_type = 3;
  } else {
    // override our ibox type if forced param exist
    if(params['type']) {ibox_type = parseInt(params['type']);}
    else{hideIbox();return false;}
  }
  
  ibox_type = parseInt(ibox_type);


  switch(ibox_type) {
    
    case 1:

      showIndicator();
      
      imgPreloader = new Image();
      
      imgPreloader.onload = function(){
  
        imgPreloader = resizeImageToScreen(imgPreloader);
        hideIndicator();
  
        var strHTML = "<img name=\"ibox_img\" src=\""+url+"\" style=\"width:"+imgPreloader.width+"px;height:"+imgPreloader.height+"px;border:0;cursor:hand;margin:0;padding:0;position:absolute;\"/>";
  
        if(loadCancelled == false) {
          
          // set width and height
          ibox.style.height = imgPreloader.height+'px';
          ibox.style.width = imgPreloader.width+'px';
        
          ibox.style.display = "";
          ibox.style.visibility = "hidden";
          posToCenter(ibox);   
          ibox.style.visibility = "visible";

          setIBoxContent(strHTML);
        }
          
      }
      
      loadCancelled = false;
      imgPreloader.src = url;
      
      break;

    case 2:
      
      var strHTML = "";

      
      if(params['height']) {ibox.style.height = params['height']+'px';} 
      else {ibox.style.height = '280px';}
      
      if(params['width']) {ibox.style.width = params['width']+'px';} 
      else {ibox.style.width = '450px';}

    
      ibox.style.display = "";
      ibox.style.visibility = "hidden";
      posToCenter(ibox);   
      ibox.style.visibility = "visible";
      
      getElem('ibox_content').style.overflow = "auto";
      
      var elemSrcId = url.substr(url.indexOf("#") + 1,1000);
      
      var elemSrc = getElem(elemSrcId);
      
      if(elemSrc) {strHTML = elemSrc.innerHTML;}
    
      setIBoxContent(strHTML);
      
      break;
      
    case 3:
      showIndicator();
      http.open('get',url,true);

      http.onreadystatechange = function() {
        if(http.readyState == 4){
          hideIndicator();
          
          if(params['height']) {ibox.style.height = params['height']+'px';} 
          else {ibox.style.height = '280px';}
          
          if(params['width']) {ibox.style.width = params['width']+'px';} 
          else {ibox.style.width = '450px';}
    
          ibox.style.display = "";
          ibox.style.visibility = "hidden";
          posToCenter(ibox);   
          ibox.style.visibility = "visible";
          getElem('ibox_content').style.overflow = "auto";
          
          var response = http.responseText;
          setIBoxContent(response);
          
        }
      }
      
      http.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
      http.send(null);
      break;
    
    default:
      
   } 
   
  
  ibox.style.opacity = 0;
  ibox.style.filter = 'alpha(opacity=0)';  
  var ibox_op_level = 10;
  
  setIboxOpacity = setOpacity;
  for (var i=0;i<=ibox_op_level;i++) {setTimeout("setIboxOpacity('ibox_wrapper',"+i+")",30*i);}

  if(ibox_type == 2 || ibox_type == 3) {
    ibox.onclick = null; 
    getElem("ibox_close_a").onclick = function() {hideIbox();}
    getElem("ibox_close_img_a").onclick = function() {hideIbox();}
    
    document.onkeydown = function(e){   
      if (e == null) { // ie
        keycode = event.keyCode;
      } else { // mozilla
        keycode = e.which;
      }
      if(keycode == 27){ // close
        hideIbox();
      }else{
        //alert(keycode);
      }
    };  
    
  } else {ibox.onclick = hideIbox;getElem("ibox_close_a").onclick = null;}

  return true;
}

setOpacity = function (elemid,value)  {
    var e = getElem(elemid);
    e.style.opacity = value/10;
    e.style.filter = 'alpha(opacity=' + value*10 + ')';
}

resizeImageToScreen = function(objImg) {
  
  var pagesize = new getPageSize();
  
  var x = pagesize.width - 100;
  var y = pagesize.height - 100;

  if(objImg.width > x) { 
    objImg.height = objImg.height * (x/objImg.width); 
    objImg.width = x; 
    if(objImg.height > y) { 
      objImg.width = objImg.width * (y/objImg.height); 
      objImg.height = y; 
    }
  } 

  else if(objImg.height > y) { 
    objImg.width = objImg.width * (y/objImg.height); 
    objImg.height = y; 
    if(objImg.width > x) { 
      objImg.height = objImg.height * (x/objImg.width); 
      objImg.width = x;
    }
  }

  return objImg;
}

maintPos = function() {
  
  var ibox = getElem('ibox_wrapper');
  var box_w = getElem('ibox_w');
  var pagesize = new getPageSize();
  var scrollPos = new getScrollPos();
  var ua = navigator.userAgent;

  if(ua.indexOf("MSIE ") != -1) {box_w.style.width = pagesize.width+'px';} 
  /*else {box_w.style.width = pagesize.width-20+'px';}*/

  if(ua.indexOf("Opera/9") != -1) {box_w.style.height = document.body.scrollHeight+'px';}
  else {box_w.style.height = pagesize.height+scrollPos.scrollY+'px';}
  
  // alternative 1
  //box_w.style.height = document.body.scrollHeight+50+'px';  
  
  posToCenter(ibox);
  
}

hideIbox = function() {
  hideBG();
  var ibox = getElem('ibox_wrapper');
  ibox.style.display = "none";

  clearIboxContent();
  window.onscroll = null;
}

posToCenter = function(elem) {
  var scrollPos = new getScrollPos();
  var pageSize = new getPageSize();
  var emSize = new getElementSize(elem);
  var x = Math.round(pageSize.width/2) - (emSize.width /2) + scrollPos.scrollX;
  var y = Math.round(pageSize.height/2) - (emSize.height /2) + scrollPos.scrollY;  
  elem.style.left = x+'px';
  elem.style.top = y+'px';
}

getScrollPos = function() {
  var docElem = document.documentElement;
  this.scrollX = self.pageXOffset || (docElem&&docElem.scrollLeft) || document.body.scrollLeft;
  this.scrollY = self.pageYOffset || (docElem&&docElem.scrollTop) || document.body.scrollTop;
}

getPageSize = function() {
  var docElem = document.documentElement
  this.width = self.innerWidth || (docElem&&docElem.clientWidth) || document.body.clientWidth;
  this.height = self.innerHeight || (docElem&&docElem.clientHeight) || document.body.clientHeight;
}

getElementSize = function(elem) {
  this.width = elem.offsetWidth ||  elem.style.pixelWidth;
  this.height = elem.offsetHeight || elem.style.pixelHeight;
}

setIBoxContent = function(str) {
  clearIboxContent();
  var e = getElem('ibox_content');
  e.style.overflow = "auto";
  e.innerHTML = str;
  
}
clearIboxContent = function() {
  var e = getElem('ibox_content');
  e.innerHTML = "";

}


getElem = function(elemId) {
  return document.getElementById(elemId);  
}

// parseQuery code borrowed from thickbox, Thanks Cody!
parseQuery = function(query) {
   var Params = new Object ();
   if (!query) return Params; 
   var Pairs = query.split(/[;&]/);
   for ( var i = 0; i < Pairs.length; i++ ) {
      var KeyVal = Pairs[i].split('=');
      if ( ! KeyVal || KeyVal.length != 2 ) continue;
      var key = unescape( KeyVal[0] );
      var val = unescape( KeyVal[1] );
      val = val.replace(/\+/g, ' ');
      Params[key] = val;

   }
   
   return Params;
}

/********************************************************
 Make this IE7 Compatible ;)
 http://ajaxian.com/archives/ajax-on-ie-7-check-native-first
*********************************************************/
createRequestObject = function() {
  var xmlhttp;
    /*@cc_on
  @if (@_jscript_version>= 5)
      try {xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
      } catch (e) {
          try {xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");}
          catch (E) {xmlhttp = false;}
      }
  @else
    xmlhttp = false;
  @end @*/
  if (!xmlhttp && typeof XMLHttpRequest != "undefined") {
      try {xmlhttp = new XMLHttpRequest();} catch (e) {xmlhttp = false;}
  }
  return xmlhttp;
}

var http = createRequestObject();

function addEvent(obj, evType, fn){ 
 if (obj.addEventListener){ 
   obj.addEventListener(evType, fn, false); 
   return true; 
 } else if (obj.attachEvent){ 
   var r = obj.attachEvent("on"+evType, fn); 
   return r; 
 } else { 
   return false; 
 } 
}
addEvent(window, 'load', init_ibox);