<!--
function refocus() {
   var requiresreload = readCookie('requiresreload');
   if (requiresreload) {
      window.location.reload();
      eraseCookie('requiresreload');
   }
   return true;
}
function removeElements(nodeids) {
   var parent;
   var child;
   for (var i=0;i<nodeids.length;i++) {
      while(child = document.getElementById(nodeids[i])) {
         parent = child.parentNode;
         parent.removeChild(child);
      }
   }
   return true;
}
function setreload() {
   createCookie('requiresreload',1,5);
}
function createCookie(name,value,mins) {
   var date;
   var expires;
	if (mins) {
		date = new Date();
		date.setTime(date.getTime()+(mins*60000));
		expires = "; expires="+date.toGMTString();
	}
	else expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
	return true;
}

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 false;
}

function eraseCookie(name) {
	createCookie(name,0,-1);
}
function getQueryVariable(variable) {
//alert("FUNCTION: getQueryVariable");
  var query = window.location.search.substring(1);
  var vars = query.split("&");
  for (var i=0;i<vars.length;i++) {
    var pair = vars[i].split("=");
    if (pair[0] && pair[0] == variable) {
      return pair[1];
    }
  } 
  //alert('Query Variable ' + variable + ' not found');
  return false;
}
function getSessionId() {
	var nameEQ = "PHPSESSID=";
	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 carryQueryVariables() {
//alert("FUNCTION: carryQueryVariables");
   var query = window.location.search.substring(1);
   var vars = query.split("&");
   var pairs = new Array();
   for (var i=0;i< vars.length ; i++) {
      pairs = vars[i].split('=');
      if (pairs[0].indexOf('mapImage')== -1)
         document.getElementById(pairs[0]).value = unescape(pairs[1]);
   }
   return true;
}
function setBanner() {
    var banner_dir = './images/banners/';
    var banner_images = new Array('banner_khp_chunks.jpg',
                                  'banner_nettle_chunks.jpg',
                                  'banner_orchid_chunks.jpg',
                                  'banner_cloud_chunks.jpg',
                                  'banner_wave_chunks.jpg'/*,
                                  'banner_reeds_chunks.jpg'*/);
    var now = new Date();
    var rand = now % banner_images.length;
    var el_banner = document.getElementById('banner');
    var src_image = 'url(' + banner_dir + banner_images[rand] + ')';
    el_banner.style.backgroundImage = src_image;
    //alert (rand + " : " + src_image);
    return true;
}
function setCurrent() {
    node = document.getElementById('operation');
    value = node.value;
    document.getElementById(value).className = 'current';
}
function launchDialog(url, x, y) {
//alert ('FUNCTION: launchDialog');
    var popWin = null;
    var bits = url.split('?');
    var wname = bits[0];
    /*
      apparently internet explorer doesn't like . or / in the 
      window name so the next two lines take the page url and strip
      the ./ from the front and .php from the end.
      
      not sure whether it will work with directory/page urls.   
    */
    wname = wname.replace(/\//g, '_');
    wname = wname.replace(/\./, '');
    wname = wname.replace(/\.php/,'');
    if (!popWin || !popWin.open) {
        if (!x || x == '') x = 740;
        if (!y || y == '') y = 400;
        var attributes = "width=" + x + "px,height=" + y + "px,toolbar=0,status=0,scrollbars=1,resizable=1,title=0";
//alert(url);
        popWin = window.open(url, wname, attributes);
    }
    popWin.focus();
    return false;
}

function launchImageViewer (image,title) {
   var popWin = null;
   var url = './imageServer.php?image=' + image;
   attributes = "toolbar=0,status=0,scrollbars=1,resizable=1,title=1"
   popWin = window.open(url,title,attributes);
   popWin.focus();
   return false;
}
function launchPointDialog (url, id) {
    node = document.getElementById('select:coordinateSystem');
    tokens = id.split(':');
    pointNumber = tokens[tokens.length-1];
    index = node.selectedIndex;
    options = node.options;
    coords = (options[index]).value;
    url += '?coords=' + coords;
    url += '&point=' + pointNumber;
    launchDialog(url, id);
}
/* 
    this function should have a url and can then be used by anything to
    create child locations, organisations, individuals, classifications etc
    
    name change to launchDefinitionDialog(url, parentNamespace, id)
*/
function launchDefinitionDialog(page, namespace) {
    var url = page;
    var org_id = '';
    var checked = getCheckedList(namespace);
    for (i=0;i<checked.length;i++) {
        org_id += checked[i].id + ':';
    }
    // remove last : from string to avoid null last element
    org_id = org_id.substr(0,(org_id.length-1));
    url += '?org_id=' + org_id;
    launchDialog(url);
}
function showDiv(id) {
    var node = document.getElementById(id);
    node.style.visibility = 'visible';
    node.style.height = 'auto';
    node.style.width = 'auto';
    
}
function hideDiv(id) {
    var node = document.getElementById(id);
    node.style.visibility = 'hidden';
    node.style.height = '0px';
    node.style.width = '0px';
}
function addPoint(id) {
    parent = document.getElementById('boundaries');
    node = parent.lastChild;
    newNode = node.cloneNode(true);
    points = parent.childNodes.length;
    newNode.id = "point:" + points;
    newNode.lastChild.id = 'delete:' + points;
    parent.appendChild(newNode);
    document.getElementById(id).blur();
    return false;
}
function deletePoint(id) {
    tokens = id.split(':');
    pointNumber = tokens[1];
    pointId = 'point:' + pointNumber;
    parent = document.getElementById('boundaries');
    if (parent.childNodes.length > 1) {
        child = document.getElementById(pointId);
        parent.removeChild(child);
    } else {
        alert('Locations must have at least one defined boundary point. This can be as simple as a name with no coordinate reference.');
    }
    return false;
}
function definePoint() {
    validate_coords();
}
function updateElement(elementId,value) {
   document.getElementById(elementId).value = value;
   return true;
}
function shiftElement(div,margin) {
   document.getElementById(div).style.marginLeft = margin;
   return true;
}
//-->