function setFirstBannerImg(){
			changeBannerImg(0);
			var HeaderImageText = document.getElementById('HeaderImageText');
			HeaderImageText.innerHTML = '<b>'+ imageHeaderArray[0][2] +'</b>'
		}
		function changeImage(ImgNo){
			changeBannerImg(ImgNo);
			currentRHHeaderImg = parseInt(ImgNo)+1;
			currentLHHeaderImg = parseInt(ImgNo)-1;
			var bannerImgNo = document.getElementById('BannerImg').alt
			if (numSiteId==4){ 
				document.getElementById('cPrevHeaderImgBtn').src='pics/triangle_larrowwo.gif';
				document.getElementById('cNextHeaderImgBtn').src='pics/triangle_rarrowwo.gif';
			} else if (numSiteId==3){
				document.getElementById('cPrevHeaderImgBtn').src='pics/triangle_larrowcrown.jpg';
				document.getElementById('cNextHeaderImgBtn').src='pics/triangle_rarrowcrown.jpg';
			} else if (numSiteId==2){
				document.getElementById('cPrevHeaderImgBtn').src='pics/triangle_larrowXmas.jpg';
				document.getElementById('cNextHeaderImgBtn').src='pics/triangle_rarrowXmas.jpg';
			}else{
				document.getElementById('cPrevHeaderImgBtn').src='pics/triangle_larrow.jpg';
				document.getElementById('cNextHeaderImgBtn').src='pics/triangle_rarrow.jpg';
			}
			document.getElementById('cPrevHeaderImgBtn').title='Move Previous Banner Image';
			document.getElementById('cNextHeaderImgBtn').title='Move Next Banner Image';
		}
		function changeBannerImg(existingBannerImage) {
			document.getElementById('BannerImg').src='downloadImage.aspx?imgID=' + eval(imageHeaderArray[existingBannerImage][0]);
			document.getElementById('BannerImg').alt=existingBannerImage;
			document.getElementById('BannerImg').title= imageHeaderArray[existingBannerImage][2]+'';
			// set the image summary
			var tmpexistingBannerImage = eval(parseInt(existingBannerImage)+1);
			document.getElementById('HeaderImageText').innerHTML = '<b>'+ imageHeaderArray[existingBannerImage][2] +'</b>'
		}
		function moveBannerImg(moveImage){
			if (moveImage>=0 && eval((parseInt(moveImage)))<=maxHeaderImages-1){ 
				changeImage(moveImage); 
			} else if (moveImage==-1) {
				changeImage(maxHeaderImages-1); 
			} else if (eval((parseInt(moveImage)))>=maxHeaderImages-1) {
				changeImage(0); 
			}
		}
		// INITALISE JS
		setFirstBannerImg();