// JavaScript Document
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_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 dd_StatusBarMsg(msgStr) { //v1.0 www.dazdezines.com/mme
  window.status=msgStr;
  document.MM_returnValue = true;
}
function dd_StatusBarMsgClear(msgStr) {
  window.status=msgStr;
  document.MM_returnValue = true;
}
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 setCookie (name, value, lifespan, access_path) {
      
  var cookietext = name + "=" + escape(value)  
    if (lifespan != null) {  
      var today=new Date()     
      var expiredate = new Date()      
      expiredate.setTime(today.getTime() + 1000*60*60*24*lifespan)
      cookietext += "; expires=" + expiredate.toGMTString()
    }
    if (access_path != null) { 
      cookietext += "; PATH="+access_path 
    }
   document.cookie = cookietext 
   return null  
}


function setDatedCookie(name, value, expire, access_path) {
    var cookietext = name + "=" + escape(value)
      + ((expire == null) ? "" : ("; expires=" + expire.toGMTString()))
     if (access_path != null) { 
      cookietext += "; PATH="+access_path 
     }
   document.cookie = cookietext 
   return null        
}


function getCookie(Name) {
  var search = Name + "="                       
  var CookieString = document.cookie            
  var result = null                               
  if (CookieString.length > 0) {                
    offset = CookieString.indexOf(search)       
    if (offset != -1) {                         
      offset += search.length                   
      end = CookieString.indexOf(";", offset)   
      if (end == -1)                            
        end = CookieString.length               
      result = unescape(CookieString.substring(offset, end))         
                                                
      } 
    }
   return result                                
}


function deleteCookie(Name, Path) {
  setCookie(Name,"Deleted", -1, Path)
}



function Div_hide(pass) { 
var divs = document.getElementsByTagName('div'); 
for(i=0;i<divs.length;i++){ 
if(divs[i].id.match(pass)){//if they are 'see' divs 
if (document.getElementById) // DOM3 = IE5, NS6 
divs[i].style.display = "none";// show/hide 
else 
if (document.layers) // Netscape 4 
document.layers[divs[i]].display = "none";
else // IE 4 
document.all.hideShow.divs[i].display = "none"; 
} 
} 
} 

function Div_show(pass) { 
var divs = document.getElementsByTagName('div'); 
for(i=0;i<divs.length;i++){ 
if(divs[i].id.match(pass)){ 
if (document.getElementById) 
divs[i].style.display="block"; 
else 
if (document.layers) // Netscape 4 
document.layers[divs[i]].display="block"; 
else // IE 4 
document.all.hideShow.divs[i].display="block";
} 
} 
} 

function dd_StatusBarMsg(msgStr) { //v1.0 www.dazdezines.com/mme
  window.status=msgStr;
  document.MM_returnValue = true;
}

function dd_StatusBarMsgClear(msgStr) {
  window.status=msgStr;
  document.MM_returnValue = true;
}

function mOver() {
self.status='Click here now to visit this external site'; return true;
}

function mOut() {
self.status=''; return true;
}

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 var expires = "";
	if (!readCookie(name)) {
		document.cookie = name+"="+value+expires+"; path=/";
	}
}

function createnewCookie(name,value,days)
{
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var 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 eraseCookie(name)
{
	createCookie(name,"",-1);
}

rnd.today=new Date();
rnd.seed=rnd.today.getTime();

function rnd() {
    rnd.seed = (rnd.seed*9301+49297) % 233280;
    return rnd.seed/(233280.0);
};

function rand(number) {
    return Math.ceil(rnd()*number);
};

var refer=document.referrer;
createnewCookie('referer',refer,0);
doc=document.location;
createnewCookie('document',doc,0);
tid = new Date();
timeid = tid.getTime();
if (!readCookie('sessionid')) {
   createCookie('sessionid',timeid,0);
}
if (readCookie('userid')) {
   var myuserid = readCookie('userid');
   if (myuserid.length < 14) {
      eraseCookie('userid');
   }
}
if (readCookie('__utmv')) {
   var myutmv = readCookie('__utmv');
   if (myutmv.length < 24) {
      eraseCookie('__utmv');
   }
}
if (!readCookie('__utmv') && readCookie('userid')) {
	var myuserid = readCookie('userid');
	document.cookie = "__utmv=174674225."+myuserid+"; expires=Sun, 18 Jan 2038 00:00:00 GMT; path=/; domain=.bodc.ac.uk;";
}