function scrollingPhone(idx) {
		var seriesImgStr = "";
		for(var i=0; ((i < 3) && (idx < arrPhoneLength)); i++) {
			seriesImgStr += arrPhoneImageStr[(idx++)]
		}
		var scrollImg = document.getElementById('phoneMainSeriesImage');
		scrollImg.innerHTML = seriesImgStr;
		phoneArrow(arrPhoneModel[scrollNumber]);
		phoneArrowBg(scrollNumber);
	}
	
	function scrollingRightPhone() {
		seriesArrowImageInit();
		if(arrPhoneLength > 0 && (scrollNumber+2) >= (arrPhoneLength-1)) {
			var arrowImage = document.getElementById('nextImage');
			arrowImage.src = "/image/main/btn_arrow_next.gif";
		}else {
			scrollingPhone((++scrollNumber));
			var arrowImage = document.getElementById('nextImage');
			arrowImage.src = "/image/main/btn_arrow_next_on.gif";
		}
	}
	
	function scrollingLeftPhone() {
		seriesArrowImageInit();
		if(arrPhoneLength > 0 && scrollNumber <= 0) {
			var arrowImage = document.getElementById('previewImage');
			arrowImage.src = "/image/main/btn_arrow_prev.gif";
	
		}else {
			scrollingPhone((--scrollNumber));
			var arrowImage = document.getElementById('previewImage');
			arrowImage.src = "/image/main/btn_arrow_prev_on.gif";
		}
	}