function platform_detect() {
  var platform = navigator.appVersion;
  if (platform.indexOf("Macintosh") > -1) return "mac";
  if (platform.indexOf("Win") >-1) return "win";
  if (platform.indexOf("PPC") >-1) return "mac";   // ppc

  //  if (platform.indexOf("PPC") >-1) return "ppc";

  return "other";
}

if (platform_detect() != "mac") {

  if (navigator.appName == "Microsoft Internet Explorer") {
     document.write("<LINK REL=stylesheet HREF=\"/lib/windows_ie.css\" TYPE=\"text/css\">");
  } else if (navigator.appName == "Netscape") {
     document.write("<LINK REL=stylesheet HREF=\"/lib/windows_nn.css\" TYPE=\"text/css\">");
  }

} else {

  if (navigator.appName == "Microsoft Internet Explorer") {
     document.write("<LINK REL=stylesheet HREF=\"/lib/apple_ie.css\" TYPE=\"text/css\">");
  } else if (navigator.appName == "Netscape") {
     document.write("<LINK REL=stylesheet HREF=\"/lib/apple_nn.css\" TYPE=\"text/css\">");
  }

}

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_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_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 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];}
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function MM_goToURL() { //v2.0
  for (var i=0; i< (MM_goToURL.arguments.length - 1); i+=2) //with arg pairs
    eval(MM_goToURL.arguments[i]+".location='"+MM_goToURL.arguments[i+1]+"'");
  document.MM_returnValue = false;
}

function MM_displayStatusMsg(msgStr) { //v1.0
  status=msgStr;
  document.MM_returnValue = true;
}

	function confirmnow() {
		var _ret = true;
		if (!confirm("Weet u zeker dat u deze foto wilt verwijderen?"))
		{
			_ret = false;
		} //else { this.submit();}
		return (_ret);
	}

        function checknumber(field)
        {
                var x=field.value; //document.form.field.value
                var anum=/(^\d+$)|(^\d+\.\d+$)/
                if (anum.test(x))
                        testresult=true
                else
                {
                        alert("Dit is geen geldige waarde: " + x+ "\nDe waarden 0..99 zijn toegestaan.")
                        field.value=0;
                        testresult=false
                }
                calc();
                return (testresult)
        }

        function convertvalue(argvalue)
        {
                argvalue = argvalue.toString();
                p = argvalue.indexOf('.') ;
                if (p > 0)
                {
                        ret = argvalue.substring(0,p);
                        argvalue = ret;
                } 
                var a = argvalue.substring(0,argvalue.length-2);
                var b = argvalue.substring(argvalue.length -2 ,argvalue.length);
                if (b.len==0) { b = "00"; }
                if (b.len==1) { b = "0"; }
                if (b==" ")   { b = "00"; }
                if (a != "")
                {
                        ret =  a + "," + b;
                        return ret;
                }
                else
                {
                        ret = "";
                        if (b != "") { ret = "0," + b; }
                        if ((b == 0) && (a==0)) { ret = ""; }
                        return (ret);
                }
        }

function isNum(argvalue)
{
  argvalue = argvalue.toString();

  if (argvalue.length == 0)
  {
    return false;
  }

  for (var n = 0; n < argvalue.length; n++)
  {
    if (argvalue.substring(n, n+1) < "0" || argvalue.substring(n, n+1) > "9")
    {
      return false;
    }
  }
  return true;
}

function convertvalue(argvalue)
{
  argvalue = argvalue.toString();
    p = argvalue.indexOf('.') ;
    if (p > 0)
    {
      ret = argvalue.substring(0,p);
      argvalue = ret;
    } 
  var a = argvalue.substring(0,argvalue.length-2);
  var b = argvalue.substring(argvalue.length -2 ,argvalue.length);
  if (b.len==0) { b = "00"; }
  if (b.len==1) { b = "0"; }
  if (b==" ")   { b = "00"; }
  if (a != "")
  {
    ret =  a + "," + b;
    return ret;
  }
  else
  {
    ret = "";
    if (b != "") { ret = "0," + b; }
    if ((b == 0) && (a==0)) { ret = ""; }
    return (ret);
  }

}




function breakout_of_frame()
{
  if (top.location != location) {
    top.location.href = document.location.href ;
  }
}