/* default vars */

var d = document;
var currentTime = new Date()

/* kill frames */

 if (self != top) top.location.href = window.location.href;

 function removeStartText(obj) 
{
	if (obj.value != ""){
		obj.value = "";
	}
}
 
/* detect OS */
 
var WIN = navigator.userAgent.indexOf("Win") != -1;
var MAC = navigator.userAgent.indexOf("Mac") != -1;
var LIN = navigator.userAgent.indexOf("Lin") != -1;

/* center popups */

var win = null;
function NewWindow(mypage,myname,w,h,scroll){
LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable'
win = window.open(mypage,myname,settings)
}

/* include shortcut icon */
d.write("<link rel=\"shortcut icon\" href=\"http://www.xs4all.nl/~werksman//hw.ico\"></link>");

d.write("<link href='http://fonts.googleapis.com/css?family=Lobster' rel='stylesheet' type='text/css'>")

/* browser detect */


var nuA   = navigator.userAgent;

var is_chrome = nuA.toLowerCase().indexOf('chrome') > -1;

var M2    = (nuA.indexOf("Mozilla/2") != -1);
var M3    = (nuA.indexOf("Mozilla/3") != -1);
var M4    = (nuA.indexOf("Mozilla/4") != -1);

var OP    = (nuA.indexOf("Opera") != -1);
var OP3   = (nuA.indexOf("Opera/3") != -1) && M3;
var OP35  = (nuA.indexOf("Opera/3") != -1) && M4;
var OP36  = (nuA.indexOf("Opera 3") != -1) && M4;
var OP4   = (nuA.indexOf("Opera 4") != -1) ||
            (nuA.indexOf("Opera/4") != -1);
var OP5   = (nuA.indexOf("Opera 5") != -1) ||
            (nuA.indexOf("Opera/5") != -1);
var OP6   = (nuA.indexOf("Opera 6") != -1) ||
            (nuA.indexOf("Opera/6") != -1);
var OP7   = (nuA.indexOf("Opera 7") != -1) ||
            (nuA.indexOf("Opera/7") != -1);
var OP8   = (nuA.indexOf("Opera 8") != -1) ||
            (nuA.indexOf("Opera/8") != -1);
var OP9   = (nuA.indexOf("Opera 9") != -1) ||
            (nuA.indexOf("Opera/9") != -1);

var IE    = (nuA.indexOf("MSIE") != -1) && !OP;
var IE3   = (nuA.indexOf("MSIE 3") != -1);
var IE4   = (nuA.indexOf("MSIE 4") != -1);
var IE50  = (nuA.indexOf("MSIE 5.0") != -1) && !OP;
var IE55  = (nuA.indexOf("MSIE 5.5") != -1) && !OP;
var IE60  = (nuA.indexOf("MSIE 6.0") != -1) && !OP;
var IE70  = (nuA.indexOf("MSIE 7.0") != -1) && !OP;
var IE80  = (nuA.indexOf("MSIE 8.0") != -1) && !OP;

var GECKO = (nuA.indexOf("Gecko") != -1);
var MOZ   = GECKO && (nuA.indexOf("Netscape") == -1) &&
            (nuA.indexOf("Firefox") == -1);
var MOZ1  = MOZ && (nuA.indexOf("rv:1") != -1);

var FF    = (nuA.indexOf("Firefox") != -1);
var FF10  = (nuA.indexOf("Firefox/1.0") != -1);
var FF15  = (nuA.indexOf("Firefox/1.5") != -1);
var FF20  = (nuA.indexOf("Firefox/2.0") != -1);
var FF30  = (nuA.indexOf("Firefox/3.0") != -1);

var NN    = (navigator.appName == "Netscape") && !OP && !MOZ;
var NN2   = NN && M2;
var NN3   = NN && M3;
var NN4   = NN && M4;
var NN6   = (nuA.indexOf("Netscape6") != -1);
var NN7   = (nuA.indexOf("Netscape/7") != -1);
var NN8   = (nuA.indexOf("Netscape/8") != -1);



if (IE80)
{
d.write("<link rel=\"STYLESHEET\" type=\"text/css\" href=\"css/hw_extra.css\">");
}

/* style switcher */

var num=0;

function setActiveStyleSheet(title, reset) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
  if (reset == 1) {
	  createCookie("wstyle", title, 365);
  }
}

function setStyle() {
	var style = readCookie("wstyle");
	if (style != null) {
		setActiveStyleSheet(style, 0);
	}
}




function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = ";expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+";path=/;";
}



function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}



function showAntwoord(elid) {

  pEl = document.getElementById(elid);
  if(pEl.style.display!='none') {
    pEl.style.display='none';
  } else {
    pEl.style.display='block';
  }

}

setStyle();