//controle of oa alles geladen is
var StartOk  = false;
var mijngmap = null;
var GMapsOk = false;
var PreloadImgLst = new Array();

//fotoalbum, url wordt via functie startscripts gecorrigeerd
var GB_ROOT_DIR = '/design/greybox/';


function StartZoeken(VormObj, defaulttxt)
{
  ZoekTerm=VormObj.words.value;

  if(ZoekTerm==defaulttxt) ZoekTerm='';

  if(ZoekTerm.length)
  {
    return true;
  }
  else
  {
    return false;
  }

}


function maximizeWindow(WindowObj)
{
  if(parseInt(navigator.appVersion)>3)
  {
    if(navigator.appName=="Netscape")
    {
      if(WindowObj.screenX>0 || WindowObj.screenY>0) WindowObj.moveTo(0,0);
      if(WindowObj.outerWidth < screen.availWidth) WindowObj.outerWidth=screen.availWidth;
      if(WindowObj.outerHeight < screen.availHeight) WindowObj.outerHeight=screen.availHeight;
    }
    else
    {
      WindowObj.moveTo(-4,-4);
      WindowObj.resizeTo(screen.availWidth+8,screen.availHeight+8);
    }
  }
}


function trim(value) {
	value = value.replace(/^\s+/,'');
	value = value.replace(/\s+$/,'');
	return value;
}


function Coord2Num(CoordIn){

	var CoordOut=0;

	//speciale karakters eruit filtere
	var MijnRExp = /&#\d*;/g;
	var ChkMijnPos=CoordIn.replace(MijnRExp," ");

	//alle niet numerieke karakters verwijderen
	var MijnRExp = /([^0-9/.])/g;
	var ChkMijnPos=trim(CoordIn.replace(MijnRExp," "));

	var PosParts=ChkMijnPos.split(" ");
	var ChkIndex=0;
	for(p=0;p<PosParts.length;p++){
		var ChkStr = trim(PosParts[p]);
		if(ChkStr!=''){
			if(ChkIndex==0) CoordOut+=1*ChkStr;
			if(ChkIndex==1) CoordOut+=ChkStr/60;
			if(ChkIndex==2) CoordOut+=ChkStr/3600;
			ChkIndex++;
		}
	}

	return CoordOut;
}


function StartGoogleMap(StrCoord,Kmlbestand_Url)
{

  XYcoord=StrCoord.split(",");
  if(XYcoord.length == 2)
  {
    if(GBrowserIsCompatible())
    {

      XYcoord[0]=Coord2Num(XYcoord[0]);
      XYcoord[1]=Coord2Num(XYcoord[1]);

      GMapsOk = true;

      var mijngmap = new GMap2(document.getElementById("mijngmap"));

      var CenterCoor = new GLatLng(1*XYcoord[0],1*XYcoord[1]);

      mijngmap.addControl(new GSmallMapControl());
      mijngmap.addControl(new GMapTypeControl());
      mijngmap.addMapType(G_PHYSICAL_MAP);//terrain map aan navigatie toevoegen
      mijngmap.setCenter(CenterCoor,13);
      mijngmap.setMapType(G_PHYSICAL_MAP);//terrain map aktief zetten
      mijngmap.setZoom(9);

      mijngmap.enableScrollWheelZoom();

      if(Kmlbestand_Url)
      {
        var mijnlokaties = new GGeoXml(Kmlbestand_Url);
        mijngmap.addOverlay(mijnlokaties);
      }
      else
      {
        var marker = new GMarker(CenterCoor);
        mijngmap.addOverlay(marker);
      }

    }
  }

}


function NieuwVenster(waarheen)
{
  DetailVenster = window.open(waarheen,'Detail','toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizeable=yes,width=800,height=600');
  DetailVenster.focus();
}


function VideoVenster(waarheen)
{
  DetailVenster = window.open(waarheen,'Detail','toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizeable=no,width=350,height=400');
  DetailVenster.focus();
}


function NaarWebsite(waarheen)
{
  DetailVenster = window.open(waarheen,'_blank');
  DetailVenster.focus();
}


function GaNaar(naarurl)
{
  document.location.href=naarurl;
}


function onPreload(aImages, nImages)
{
  if(nImages == aImages.length){
    // BlokeerInteraktie=false;
    return;
  }
}


//Image preload routines staan hieronder
function ImagePreloader(images, callback)
{

  this.callback = callback;// store the callback

  this.nLoaded = 0;
  this.nProcessed = 0;
  this.aImages = new Array;

  this.nImages = images.length;

  for(var i=0; i < images.length; i++){// for each image, call preload()
    this.preload(images[i]);
  }

}

ImagePreloader.prototype.preload = function(image)
{

  // create new Image object and add to array
  //var oImage = new Image;
  var oImage = document.createElement("img"); // met new Image() werkt 't zeker niet!

  this.aImages.push(oImage);

  // set up event handlers for the Image object
  oImage.onload = ImagePreloader.prototype.onload;
  oImage.onerror = ImagePreloader.prototype.onerror;
  oImage.onabort = ImagePreloader.prototype.onabort;

  // assign pointer back to this.
  oImage.oImagePreloader = this;
  oImage.bLoaded = false;

  // assign the .src property of the Image object
  oImage.src = image;
}

ImagePreloader.prototype.onComplete = function()
{
  this.nProcessed++;

  if(this.nProcessed == this.nImages)
    this.callback(this.aImages, this.nLoaded);

}

ImagePreloader.prototype.onload = function()
{
  this.bLoaded = true;
  this.oImagePreloader.nLoaded++;
  this.oImagePreloader.onComplete();
}

ImagePreloader.prototype.onerror = function()
{
  this.bError = true;
  this.oImagePreloader.onComplete();
}

ImagePreloader.prototype.onabort = function()
{
  this.bAbort = true;
  this.oImagePreloader.onComplete();

}


//event handler functies
function addAnEvent(el, evname, func)
{
  if(el.attachEvent)
  { // IE
    el.attachEvent("on" + evname, func);
  }
  else if(el.addEventListener)
  { // Gecko / W3C
    el.addEventListener(evname, func, true);
  }
  else
  {
    el["on" + evname] = func;
  }
}


function stopEvent(event)
{
	if(event.preventDefault)
  {
		event.preventDefault();
		event.stopPropagation();
	}
	else
	{
    event.returnValue=false;
		event.cancelBubble=true;
	}
}



function StartScripts(webroot)
{
  //initialisatie van enkele parameters
  StartOk = true;
  GMapsOk = false;

  //fotoalbum
  GB_ROOT_DIR=webroot+'design/greybox/';


}