//<![CDATA[
//*****************************************************************************
// Do not remove this notice.
//
// Copyright 2001 by Mike Hall.
// See http://www.brainjar.com for terms of use.
//*****************************************************************************

// Determine browser and version.

function Browser() {

  var ua, s, i;

  this.isIE    = false;
  this.isNS    = false;
  this.version = null;

  ua = navigator.userAgent;

  s = "MSIE";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isIE = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  s = "Netscape6/";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  // Treat any other "Gecko" browser as NS 6.1.

  s = "Gecko";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = 6.1;
    return;
  }
}

var browser = new Browser();

// Global object to hold drag information.

var dragObj = new Object();
dragObj.zIndex = 0;


var dir, mini, maxi, draggen;
draggen=0;

function dragStart(event, id, indir, inMin, inMax) {
  var el;
  var x, y;
  
  draggen=1;
  dir=indir;
  mini=inMin;
  maxi=inMax;

  // If an element id was given, find it. Otherwise use the element being
  // clicked on.
  //dir: direction: 1=horizontal, 2=vertikaal
  //mini: minimum (constraint)
  //maxi: maximum (constraint)

  if (id)
    dragObj.elNode = document.getElementById(id);
  else {
    if (browser.isIE)
      dragObj.elNode = window.event.srcElement;
    if (browser.isNS)
      dragObj.elNode = event.target;

    // If this is a text node, use its parent element.

    if (dragObj.elNode.nodeType == 3)
      dragObj.elNode = dragObj.elNode.parentNode;
  }

  // Get cursor position with respect to the page.

  if (browser.isIE) {
    x = window.event.clientX + document.documentElement.scrollLeft
      + document.body.scrollLeft;
    y = window.event.clientY + document.documentElement.scrollTop
      + document.body.scrollTop;
  }
  if (browser.isNS) {
    x = event.clientX + window.scrollX;
    y = event.clientY + window.scrollY;
  }

  // Save starting positions of cursor and element.

  dragObj.cursorStartX = x;
  dragObj.cursorStartY = y;
  dragObj.elStartLeft  = parseInt(dragObj.elNode.style.left, 10);
  dragObj.elStartTop   = parseInt(dragObj.elNode.style.top,  10);

  if (isNaN(dragObj.elStartLeft)) dragObj.elStartLeft = inMin;
  if (isNaN(dragObj.elStartTop))  dragObj.elStartTop  = 0;

  // Update element's z-index.

  dragObj.elNode.style.zIndex = ++dragObj.zIndex;

  // Capture mousemove and mouseup events on the page.

  if (browser.isIE) {
    document.attachEvent("onmousemove", dragGo);
    document.attachEvent("onmouseup",   dragStop);
    window.event.cancelBubble = true;
    window.event.returnValue = false;
  }
  if (browser.isNS) {
    document.addEventListener("mousemove", dragGo,   true);
    document.addEventListener("mouseup",   dragStop, true);
    event.preventDefault();
  }
}

function dragGo(event) {

  var x, y;
 
  // Get cursor position with respect to the page.

  if (browser.isIE) {
    x = window.event.clientX + document.documentElement.scrollLeft + document.body.scrollLeft;
    y = window.event.clientY + document.documentElement.scrollTop + document.body.scrollTop;
  }
  if (browser.isNS) {
    x = event.clientX + window.scrollX;
    y = event.clientY + window.scrollY;
  }

  // Move drag element by the same amount the cursor has moved.

  
  
  if(dir==1){
  		 newposx=dragObj.elStartLeft + x - dragObj.cursorStartX;
  		 if (newposx<=mini){newposx=mini};
  		 if (newposx>=maxi+balstartInitPos){newposx=maxi+balstartInitPos};
  		 dragObj.elNode.style.left = newposx + "px";
  		 balstartPos=newposx;
  		 startPos=-((balstartPos-balstartInitPos+1)/scrollbarbreedte)*(ImageBreedte-ScrollVakBreedte);
  		 var obj = document.getElementById("sliding");
  		 obj.style.left = startPos + "px";
  	}else{
  		newposy=dragObj.elStartTop  + y - dragObj.cursorStartY;
  		dragObj.elNode.style.top  = newposy + "px";
  		 if (newposy<mini){newposy=mini};
  		 if (newposy>maxi){newposy=maxi};
	}
  if (browser.isIE) {
    window.event.cancelBubble = true;
    window.event.returnValue = false;
  }
  if (browser.isNS)
    event.preventDefault();
}

function dragStop(event) {

  // Stop capturing mousemove and mouseup events.
  draggen=0;
 setTimeout('scroll(0)', wacht)
  if (browser.isIE) {
    document.detachEvent("onmousemove", dragGo);
    document.detachEvent("onmouseup",   dragStop);
  }
  if (browser.isNS) {
    document.removeEventListener("mousemove", dragGo,   true);
    document.removeEventListener("mouseup",   dragStop, true);
  }
}
//]]>


var beweging, ScrollVakBreedte, ImageBreedte, wacht, scrollbarbreedte, startPos, balstartPos, speed, wacht, balstartInitPos, richting, scrollrichting;

scrollrichting=0;
richting=0;

function initscroll(inScrollVakBreedte, inImageBreedte, inMin, inMax){				
	speed=2;
	startPos=0;
	
	ScrollVakBreedte=inScrollVakBreedte;
	ImageBreedte=inImageBreedte;
	balstartInitPos=inMin;
	balstartPos=balstartInitPos;
	wacht=50;
	scrollbarbreedte=inMax;	
	draggen=0;
	var obj = document.getElementById("sliding");
	var bal = document.getElementById("bal");
	obj.style.left = startPos + "px";
	bal.style.left = balstartPos + "px";	
};


function scroll(inRichting){				
	if(inRichting!=0){
		scrollrichting=inRichting;
	};
	var obj = document.getElementById("sliding");
	var bal = document.getElementById("bal");
	if(scrollrichting==1){
		startPos=startPos-speed;
		balstartPos=balstartPos+scrollbarbreedte/((ImageBreedte-ScrollVakBreedte)/speed);
		checker=balstartInitPos+speed
	}else{
		startPos=startPos+speed;
		balstartPos=balstartPos-scrollbarbreedte/((ImageBreedte-ScrollVakBreedte)/speed);
		checker=balstartInitPos-speed
	}
	
	obj.style.left = startPos + "px";
	bal.style.left = balstartPos + "px";
	//alert(balstartPos)
	//alert(balstartInitPos)
	if(balstartPos-balstartInitPos<=scrollbarbreedte && startPos<=0 && draggen==0){		
		 beweging =setTimeout('scroll(0)', wacht)
	};
};	

function scrolllinks(){	
	if(scrollrichting!=-1){
		if(beweging){clearTimeout(beweging);}
		scroll(-1);
	}
	
}
function scrollrechts(){
	if(scrollrichting!=1){
		if(beweging){clearTimeout(beweging);}
		scroll(1);
	}
}

	
var type = "IE";	//Variable used to hold the browser name
BrowserSniffer();
//detects the capabilities of the browser
function BrowserSniffer() {
	if (navigator.userAgent.indexOf("Opera")!=-1 && document.getElementById) type="OP";		//Opera
	else if (document.all) type="IE";														//Internet Explorer e.g. IE4 upwards
	else if (document.layers) type="NN";													//Netscape Communicator 4
	else if (!document.all && document.getElementById) type="MO";							//Mozila e.g. Netscape 6 upwards
	else type = "IE";		//I assume it will not get here
}

function getLayer(name) {

  // Returns a handle to the named layer.

  if (document.layers)
    return(document.layers[name]);
  else if (document.all) {
    layer = eval('document.all.' + name + '.style');
    //alert (layer.id);
    return(layer);
   //return (document.getElementById(name))
  }
  else
    {
      return (document.getElementById(name))
      //return(null);
    }
}
//Show and hide a layer
//id is the name of the layer
//action is either hidden or visible
//Seems to work with all versions NN4 plus other browsers
function showLayer(id, action){
	if (type=="IE") eval("document.all." + id + ".style.visibility='" + action + "'");
	if (type=="NN") eval("document." + id + ".visibility='" + action + "'");
	if (type=="MO" || type=="OP") eval("document.getElementById('" + id + "').style.visibility='" + action + "'");
}

function hideLayer(id){
	if (type=="IE") eval("document.all." + id + ".style.visibility='hidden'");
	if (type=="NN") eval("document." + id + ".visibility='hide'");
	if (type=="MO" || type=="OP") eval("document.getElementById('" + id + "').style.visibility='hidden'");
}
function zoeken(){
	document.formulier.submit();
}

function verstuur(velden){ 
   var argv = verstuur.arguments;
   var argc = (verstuur.arguments.length)/3 
   //1=veldnaam, 2=naam, 3=type
   for(i=0;i<argc;i++) {
		 
		  fld = eval('document.formulier.' + argv[i])
	    if(fld.value==''){ 
	      alert (argv[i+argc]+' is verplicht')
	      fld.focus();
	      return;
	    }else{
   			if(argv[i+(2*argc)]=='3'){ //email
  	      val = fld.value.indexOf(' ') == -1 //geen spaties
  				val &= fld.value.indexOf('@') > 0 //er zit een @ in
  				val &= fld.value.indexOf('@') == fld.value.lastIndexOf('@') //slechts 1 @
  				val &= fld.value.indexOf('@') < fld.value.lastIndexOf('.') //een @ voor een punt
  				val &= fld.value.lastIndexOf('.') < fld.value.length-2 //twee letters achter de punt
  				if (!val){  				  
    				alert ('Er is geen geldig email adres ingevuld')
    	      fld.focus();
    	      return;
    	     }
    	     if(document.formulier.vanemail){document.formulier.vanemail.value=fld.value}
  			}
	    }
		  
    }
  document.formulier.submit()
}
  
function MM_findObj(n, d) { //v4.01
  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 && d.getElementById) x=d.getElementById(n); return x;
}

function openwin(page, w, h) {
	feat='width=' + w + ', height=' + h + ',status=1, scrollbars=1, resizable=1'
  	window.open(page, 'Popup',feat)
}


function zenden(){
	if(document.sendform.naam.value==""){
		alert("Het formulier is niet compleet ingevuld. Uw naam is verplicht")
		document.sendform.naam.focus();
	}else{
		if((document.sendform.email.value == "") || (document.sendform.email.value.indexOf('@') == -1) || (document.sendform.email.value.indexOf('.') == -1)) {
		  alert("Het formulier is niet compleet ingevuld. Uw e-mail adres is verplicht")
		  document.sendform.email.focus();
		  return;
		}
	
		document.sendform.submit()
	}
}
function doAanmelden(){
	if(document.sendform.naam.value==""){
		alert("Het formulier is niet compleet ingevuld. Uw naam is verplicht")
		document.sendform.naam.focus();
	}else{
		
		if(document.sendform.email.value == "") {
		  alert("Uw e-mail adres is verplicht")
		  document.sendform.email.focus();
		  return;
		} else	{
				val = document.sendform.email.value.indexOf(' ') == -1 //geen spaties
  				val &= document.sendform.email.value.indexOf('@') > 0 //er zit een @ in
  				val &= document.sendform.email.value.indexOf('@') == document.sendform.email.value.lastIndexOf('@') //slechts 1 @
  				val &= document.sendform.email.value.indexOf('@') < document.sendform.email.value.lastIndexOf('.') //een @ voor een punt
  				val &= document.sendform.email.value.lastIndexOf('.') < document.sendform.email.value.length-2 //twee letters achter de punt
  				if (!val){  				  
    				alert ('Er is geen geldig email adres ingevuld')
	    	      document.sendform.email.focus();
	    	      return;
    	      }
		}
		document.sendform.submit()
	}
}


function volgende(page) {
	document.cat.page.value = page;
	document.cat.id.value = 0;
	anderePagina(1);
}
function vorige(page) {
	document.cat.page.value = page;
	document.cat.id.value = 0;
	anderePagina(-1);           
}

function andereCat(){
	document.cat.page.value = 0;
	document.cat.sc.value = 0;
	document.cat.id.value = 0;
	document.cat.submit();
}
function opsturen(){
	document.formulier.opgestuurd.value = 1;
	document.formulier.submit();
}