var thisDb = 'bhpv2.nsf';

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

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}


function dS(){ 
  var q = location.href.toString(); 
  q = q.substring(q.indexOf('&q=')+3); 
 var gs = new ax('/' + thisDb + '/(Search)?SearchView&Count=1000&Query=(' + q + ')', function(op, stat) { 
	 var ops = document.getElementById('searchResults');
	 op = op.substring(op.indexOf('<div id="searchTitle">'), op.indexOf('</form>'));
	 op = op.replace('<div id="searchTitle">', '<div id="searchTitle" class="b_db c_wh b"><div class="ip">');	 
 	 op = op.replace('<div id="search">', '</div><div id="search" class="b_lg"><div class="ip">');
	 op = op.replace(/%PAGE%/g, '<img alt="Page" class="nb" src="/icons/vwicn001.gif" />').replace(/%NEWS%/g, '<img alt="News" src="/icons/vwicn028.gif" class="nb" />').replace(/%FILE%/g, '<img alt="File" src="/icons/vwicn005.gif" class="nb" />');
	 ops.innerHTML = op + '</div>';
	 var sr = document.getElementById('search');
	 if(sr.innerHTML=='') sr.innerHTML = 'There were no matching results ...';
 }).dG();
 gs = null;
}


window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
  if(window.location.toString().toLowerCase().indexOf('bhp-399') > -1) dS();
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);

var sa = false;

function s(){
	if(sa == false){
		var m=document.getElementById('b_search');
		var b = document.getElementById('b_sb');
		if(m.value=='' || m.value.indexOf('Search our') > -1){
			alert('Please enter a search query ...');
		}else{
 			sa = true;
			m.className = 'searching';
			var w= window.location.toString();
		
			// Google hook 			
                var t = new ax('/home.nsf/pages/search+unavailable?opendocument&rnd='+Math.random(),
					function(o, s){
						if(s==200)
							location.href = ('/bhpv2.nsf/Pages/BHP-399?opendocument&q=' + m.value);
						else					
							location.href = ('http://search.brent.gov.uk/search?q=' + m.value +'&entqr=0&ud=1&sort=date%3AD%3AL%3Ad1&output=xml_no_dtd&oe=UTF-8&ie=UTF-8&client=bhp_frontend&proxystylesheet=bhp_frontend&site=bhp');		
						});
			t.dG();
			
		}
	}
}

function checkCR(evt) { 
        var evt  = (evt) ? evt : ((event) ? event : null); 
        var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null); 
        var w = window.location.toString();
        if ((evt.keyCode == 13) && (w.indexOf("search.brent.gov.uk")>0)) {doSearch(); return false;}
        if ((evt.keyCode == 13) && (w.indexOf("10.17.220.200")>0)) {doSearch(); return false;}
        if ((evt.keyCode == 13) && (node.type=="text") && (node.id=='b_search')) { 
	        if(document.getElementById('b_search')) s();
             return false; 
       }else return true; 
} 

document.onkeypress = checkCR;

function ax(url, cb, opts) {
    var r = init();
    r.onreadystatechange = pR;
    function init(){ if (window.XMLHttpRequest) return new XMLHttpRequest(); else if (window.ActiveXObject) return new ActiveXObject("Microsoft.XMLHTTP");};
    function pR () { if (r.readyState == 4) { if (cb) cb(r.responseText, r.status, opts);  r=null; } };
    this.dG = function() {r.open("GET", url, true);r.send(null); };
    this.dP = function(body) { r.open("POST", url, true); r.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); r.send(body);};
}

function cx(op){
	var ief = true;
	if (window.ActiveXObject){ xd = new ActiveXObject("Microsoft.XMLDOM"); xd.async=false;
	 }else if (document.implementation && document.implementation.createDocument){
	 	  xd= document.implementation.createDocument("","",null); ief = false;
	 }else alert('Your browser is not compatible with this system, please upgrade to the latest version ...');
  	if(ief) xd.loadXML(op); else{ var oR = new DOMParser();xd = oR.parseFromString(op, "text/xml");	}	
	return xd;
}

function ms_clear(o, b, t){
	if(!b) if(o.value==t)	o.value = '';
	if(b) if(o.value=='')	o.value = t;
}


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 = "; expires=30/30/3000";
                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);
}