function CreateBannerController(domElement) {
	this.bannerDiv = domElement;
	this.leftPosition = 0;
	this.imageCount = 0;

	this.bannerimages = ['banner_images/Luxor.jpg',
						 'banner_images/Meroe.jpg',
						 'banner_images/Krak-de-Chevaliers.jpg',
						 'banner_images/Sabratha.jpg',
						 'banner_images/Karnak.jpg',
						 'banner_images/Cappadocia.jpg',
						 'banner_images/Deir-el-Bahri.jpg',
						 'banner_images/Farafra.jpg',
						 'banner_images/Western-desert.jpg',
						 'banner_images/Petra.jpg'];

}

CreateBannerController.prototype.CreateImages = function() {
	this.CreateSetImages(this.bannerimages.length);
};

CreateBannerController.prototype.CreateSetImages = function(count) {
	var fragment = document.createDocumentFragment()
	for (var i=0;i<count;i++) {
		var img = this.LoadImage();
		fragment.appendChild(img);
	}
	this.bannerDiv.appendChild(fragment);
};

CreateBannerController.prototype.LoadImage = function() {
	var img = document.createElement('img');
	var imgIndex = this.imageCount % this.bannerimages.length;
	img.src = this.bannerimages[imgIndex];
	
	this.imageCount++;
	return img;
};

CreateBannerController.prototype.MoveStepAndKeepRunning = function() {
	this.MoveStep();
	this.KeepRunningMoveStep();
};

CreateBannerController.prototype.KeepRunningMoveStep = function() {
	setTimeout("DoMoveStep();", 25);
};

CreateBannerController.prototype.MoveStep = function() {
	this.leftPosition++;
	this.RepositionImages();
};

CreateBannerController.prototype.RepositionImages = function() {
	this.CheckForRemoval();

	this.bannerDiv.scrollLeft = this.leftPosition;
	
	if (this.bannerDiv.scrollWidth 
			== (this.bannerDiv.scrollLeft + this.GetClientWidth())) {
		this.bannerDiv.appendChild(this.LoadImage());
	}

};

CreateBannerController.prototype.CheckForRemoval = function() {
	var img = this.bannerDiv.firstChild;
	var imageWidth = parseInt(img.width);
	if (imageWidth > 0 && (this.leftPosition) > imageWidth) {
		// Remove the image!
		this.bannerDiv.removeChild(img);
		
		this.leftPosition -= imageWidth;
	}
};

CreateBannerController.prototype.GetClientWidth = function() {
	if (document.body.clientWidth) {
		return document.body.clientWidth;
	} else {
		return window.innerWidth;
	}
};

// Detect if a mobile device (from detectmobilebrowser.com)
function isMobileBrowser() {
  var a = navigator.userAgent||navigator.vendor||window.opera;

  return (/android|avantgo|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(a) || 
      /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|e\-|e\/|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(di|rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|xda(\-|2|g)|yas\-|your|zeto|zte\-/i.test(a.substr(0,4)));
}

// Globals
var controller;

function DoMoveStep() {
	controller.MoveStepAndKeepRunning();
}

function LoadBanner() {
	var div = document.getElementById('banner');
	
	controller = new CreateBannerController(div);
	
	if (isMobileBrowser()) {
		// Just load 6 and leave it
		controller.CreateSetImages(6);
	} else {
		controller.CreateImages();
		controller.MoveStepAndKeepRunning();
	}
}

function AddOnloadHandler(func) {
    if (window.onload) {
        var windowOnload = window.onload;
        window.onload = function(evt) {
            windowOnload(evt);
            func(evt);
        }
    } else {
        window.onload = function(evt) {
            func(evt);
        }
    }
}


AddOnloadHandler(LoadBanner);