var theImages = new Array()

theImages[0] = 'images/header1.jpg'
theImages[1] = 'images/header2.jpg'
theImages[2] = 'images/header3.jpg'
theImages[3] = 'images/header4.jpg'
theImages[4] = 'images/header5.jpg'
theImages[5] = 'images/header6.jpg'
theImages[6] = 'images/header7.jpg'
theImages[7] = 'images/header8.jpg'

theImages[8] = 'images/header10.jpg'
theImages[9] = 'images/header11.jpg'


var j = 0
var p = theImages.length;
var preBuffer = new Array()
for (i = 0; i < p; i++) {
  preBuffer[i] = new Image()
  preBuffer[i].src = theImages[i]
}

var whichImage = Math.round(Math.random()*(p-1));

function showImage() {
  document.write('<img src="'+theImages[whichImage]+'">');
}

function getexpirydate( nodays) {
  var UTCstring;
  Today = new Date();
  nomilli=Date.parse(Today);
  Today.setTime(nomilli+nodays*24*60*60*1000);
  UTCstring = Today.toUTCString();
  return UTCstring;
}

function getcookie(cookiename) {
  var cookiestring=""+document.cookie;
  var index1=cookiestring.indexOf(cookiename);
  if (index1==-1 || cookiename=="") return "";
  var index2=cookiestring.indexOf(';',index1);
  if (index2==-1) index2=cookiestring.length;
  return unescape(cookiestring.substring(index1+cookiename.length+1,index2));
}

function setcookie(name,value,duration) {
  cookiestring=name+"="+escape(value)+";EXPIRES="+getexpirydate(duration);
  document.cookie=cookiestring;
  if(!getcookie(name))
    return false;
  else
    return true;
}

function toggle(id) {
  ul = "ul_" + id;
  ulElement = document.getElementById(ul);
  if (ulElement) {
    if (ulElement.className == 'closed') {
      ulElement.className = "open";
      setcookie("ul_" + id, 'open', 20);
    }
    else {
      ulElement.className = "closed";
      setcookie("ul_" + id, 'closed', 20);
    }
  }
}

function CheckStatus(id) {
  ulElement = document.getElementById(id);
  if (getcookie(id) == "open")
    ulElement.className = "open";
}

function newWindow(url) {
  OpenWin = this.open(url,"newwindow","toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,copyhistory=yes,resizable=yes");
}

function checkField() {
  if (document.EditEventForm.entry_text.value == '') {
    alert("Field cannot be empty.")
    return false;
  }
  else {
    return true;
  }
}