/*$Header: /home/cvs/www.intunet.co.uk.new/public_html/scripts/common.js,v 1.11 2006/12/07 17:04:54 matthew Exp $*/


var is_safari = (document.childNodes)&&(!document.all)&&(!navigator.taintEnabled)&&(!navigator.accentColorName)?true:false;
var is_ie55 = (document.all && document.fireEvent && !document.createComment);

//attach events
function attachEventListener(target, eventType, functionRef,capture){
    if (typeof target.addEventListener != "undefined"){
        target.addEventListener(eventType, functionRef, capture);
    } else if (typeof target.attachEvent != "undefined"){
        target.attachEvent("on" + eventType, functionRef);
    } else {
        eventType = "on" + eventType;

        if (typeof target[eventType] == "function"){
            var oldListener = target[eventType];

            target[eventType] = function(){
                oldListener();
                return functionRef();
            };
        } else {
            target[eventType] = functionRef;
        }
    }
}


//for ie 5 node and tag need to be set it does not understand '*'
function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp('(^|\\s)'+searchClass+'(\\s|$)');
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}

	return classElements;
}


function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}

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 externalLinks(){
    if (document.getElementsByTagName){
        var objAnchors = document.getElementsByTagName('a');
        for (var iCounter=0; iCounter<objAnchors.length; iCounter++){
            if (objAnchors[iCounter].getAttribute('href') && objAnchors[iCounter].getAttribute('rel') == 'external'){
                objAnchors[iCounter].onclick = function(event){return launchWindow(this, event);}
                objAnchors[iCounter].onkeypress = function(event){return launchWindow(this, event);}
            }
        }
    }
}

function launchWindow(objAnchor, objEvent){
    var iKeyCode;
    if (objEvent && objEvent.type == 'keypress'){
        if (objEvent.keyCode)
            iKeyCode = objEvent.keyCode;
        else if (objEvent.which)
            iKeyCode = objEvent.which;
        if (iKeyCode != 13 && iKeyCode != 32)
        return true;
}

return !window.open(objAnchor);
}



 function getTarget(e){
    var targ;
    if (!e) e = window.event;
    if (e.target) targ = e.target;
    else if (e.srcElement) targ = e.srcElement;
    return targ;
}


NCS = new Object();

NCS.win_ie_ver = parseFloat(navigator.appVersion.split("MSIE")[1]);

pageInit = function(){

NCS.tabRollvers($('tabs'));
if($('search'))
 attachEventListener($('search'), 'focus', NCS.emptyField, false);  

}
NCS.fieldbits = [];
NCS.fieldbits['search'] = ['Town, Postcode or Country'];
NCS.emptyField = function(e){
obj = getTarget(e);

if(obj.value == NCS.fieldbits[obj.id])
obj.value = '';

}

//rollovers for browser that can't do hover
NCS.tabRollvers = function(obj){
    if (document.all && document.getElementById){

        var arr_li = obj.getElementsByTagName('li');

        for(var i=0;i<arr_li.length;i++){

            var obj_li = arr_li[i];
       
            if(obj_li.className.match('roll')){
                if(this.id == 'current')return false;
                obj_li.onmouseover = function(){
  
                    this.className = this.className+'on';
                };
                obj_li.onmouseout = function(){
          
                    this.className=this.className.replace(new RegExp("on\\b"), "");
                }; 
            }
        }
    }

}

attachEventListener(window, 'load', pageInit, false);