gIsImagePreloadDone = false; // becomes true after loading of navigation

/*
        dom checker
*/
dom = (document.getElementById)? true : false;
ie4 = (document.all)? true : false;
ns6= (dom && !ie4)? true : false;
ns4 = (document.layers)? true:false;

function toggleDisplay(obj1Name, obj2Name) {
        /*
                function to show and hide the signin and signout ids
                made for the GCCI login bar
        */

        // get the object
        objSignin = getObject(obj1Name);
        objSignout = getObject(obj2Name);

        if (objSignout.style.display == 'none') {
                // show the singout
                objSignout.style.display = 'block';
                objSignin.style.display = 'none';
        } else {
                // show the singin
                objSignout.style.display = 'none';
                objSignin.style.display = 'block';
        }
}

function toggleForm(objName, varStatus) {
        /*
                function to show and hide the form elements
                made for the review and reserve and join pages
        */

        // get the object
        objSection = getObject(objName);

        if (varStatus == 'show') {
                // show the section
                objSection.style.display = 'block';
        } else {
                // hide the section
                objSection.style.display = 'none';

        }
}

function makeRand(maxNum) {
        /*
                creates a random number between 1 -> maxNum
        */
        rnd = Math.round((maxNum * Math.random()));
        rnd = (rnd == 0)? makeRand(maxNum) : rnd;
        return rnd;
}

function changeNavBg(id, bkImage, base) {
        /*
                function to change the background for the navigation.
                Takes the td id for that navigation item and the name
                of the background image and replaces them depending
                on the state that they need to change to or out of.
        */

        // get the 3 images to be changed out
        newImagel = "url(" + base + "images/nav/" + bkImage + "-l.gif)";
        newImage = "url(" + base + "images/nav/" + bkImage + ".gif)";
        newImager = "url(" + base + "images/nav/" + bkImage + "-r.gif)";

        // get the object
        tdObjl = getObject(id + "l");
        tdObj = getObject(id);
        tdObjr = getObject(id + "r");

        // change out the different ids to the new images
        if (tdObj) {
                tdObjl.style.backgroundImage = newImagel;
                tdObj.style.backgroundImage = newImage;
                tdObjr.style.backgroundImage = newImager;
        } else {
                return;
        }
}

function getObject(oID) {
        /*
                function that returns the element based on the browser
                capitalities - ns4 will return null if the obj doesn't exist
        */
        if (dom) {
                obj = document.getElementById(oID);
        } else if (ie4) {
                obj = document.all(oID);
        } else if (ns4) {
                obj = document.layers(oID);
                if (!obj)
                        return null;
        }
        return obj;
}


function promoChanger() {
        /*
                this function changes out the images for
                the promos so that there are two more
                in the changing area - will loop around
                and around
        */
        promoImgName1 = this.promoAreaExt + "Img1";
        promoImgName2 = this.promoAreaExt + "Img2";

        obj1 = document.images[promoImgName1];
        obj2 = document.images[promoImgName2];

        imgArrayLength = this.imageName.length - 1;

        nextPromoPlace = ((this.currentPromoPlace + 1) > imgArrayLength)? 0 : this.currentPromoPlace + 1;
        nextPlusPromoPlace = ((nextPromoPlace + 1) > imgArrayLength)? 0 : nextPromoPlace + 1;

        this.currentPromoPlace = nextPlusPromoPlace;

        obj1.src = '../images/promo/' + this.imageName[nextPromoPlace]
        obj2.src = '../images/promo/' + this.imageName[nextPlusPromoPlace]
}

function ldLinks() {
        /*
                function to load the images into an array when the
                loadLinks part of the object is called
        */
        args=ldLinks.arguments;
        for (var i=0;i<args.length;i++) {
                argsSplt = args[i].split("|")
                this.linkName[i] = argsSplt[0]
                this.linkTarget[i] = ((argsSplt[1] != "") && (argsSplt[1] != null))? argsSplt[1] : "";
        }
}

function ldImages() {
        /*
                function to load the images into an array when the
                loadImages part of the object is called
        */
        args=ldImages.arguments;
        for (var i=0;i<args.length;i++) {
                this.imageName[i] = args[i]
        }
}

function linkOut(lID) {
        /*
                function that controls what the user will link out to when
                a promotion is clicked
        */
        imgArrayLength = this.imageName.length - 1;
        if (lID == 1) {
                place = this.currentPromoPlace;
        } else if (lID == 2) {
                place = ((this.currentPromoPlace + 1) > imgArrayLength)? 0 : this.currentPromoPlace + 1;
        }
        if (this.linkTarget[place] != "") {
                alert(this.linkName[place])
                window.open(this.linkName[place], this.linkTarget[place]);
        } else {
                document.location.href = this.linkName[place];
        }
}

function promoImageChange(AreaExt) {
        /*
                object to handle the promo images movements

                it changes out the two images within the based on the
                promoAreaExt variable as long as that extension has the Img1 and Img2
                attached to the end of the image. eg. ptnrImg1
        */
        this.currentPromoPlace = 0;
        this.imageName = Array();
        this.linkName = Array();
        this.linkTarget = Array();
        this.loadImages = ldImages;
        this.loadLinks = ldLinks;
        this.promoAreaExt = AreaExt;
        this.promoNext = promoChanger;
        this.promoLink = linkOut;
}

partners = new promoImageChange('ptnr');
partners.loadImages("promo-holding-partner.jpg","promo-holding-partner-1.jpg","promo-holding-partner-2.jpg","promo-holding-partner-3.jpg","promo-holding-partner-4.jpg");
partners.loadLinks("http://www.digitaria.com", "http://www.google.com", "http://www.yahoo.com","http://www.google.co.nz");

offers = new promoImageChange('offr');
offers.loadImages("promo-holding-partner.jpg","promo-holding-partner-1.jpg","promo-holding-partner-2.jpg","promo-holding-partner-3.jpg","promo-holding-partner-4.jpg");
offers.loadLinks("http://www.digitaria.com|blank", "http://www.google.com", "http://www.yahoo.com|blank","");

function preload(imgObj,imgSrc) {
        /*
                function to preload images
        */
        if (document.images) {
                eval(imgObj+' = new Image()');
                eval(imgObj+'.src = "'+imgSrc+'"');
        }
}

function changeImage(imgName,imgObj,layer) {
        /*
                function to do rollovers of images
        */
        if (gIsImagePreloadDone == true) {
                if (document.images) {
                        if (document.layers) {
                                if (layer!=null){
                                        eval('document.layers.'+layer+'.document.images["'+imgName+'"].src = '+imgObj+'.src');
                                } else {
                                        document.images[imgName].src = eval(imgObj+".src");
                                }
                        } else {
                                document.images[imgName].src = eval(imgObj+".src");
                        }
                }
        }
}

function call_jumpMenu(selObj,restore){ //v3.0
  if(selObj.options[selObj.selectedIndex].value != " ")
  {
          target='parent';
          eval("parent.location='"+selObj.options[selObj.selectedIndex].value+"'");
          if (restore) selObj.selectedIndex=0;
  }else{
  return false;
  }
}