var detailimg = new Array();
					function showArtImage(imgid) {
						document.getElementById("detailimage").src = detailimg[imgid].src;
					}
					function prevImg() {
						if (currimg>1) {
							currimg--;
							showArtImage(currimg);
							//document.getElementById("pk_img_navi_right").style.color="#000000";
							//document.getElementById("pk_img_navi_right").style.cursor="pointer";
							document.getElementById("button_next_img").style.display="inline";
							if (currimg==1) {
								//document.getElementById("pk_img_navi_left").style.color="#aaaaaa";
								//document.getElementById("pk_img_navi_left").style.cursor="default";
								document.getElementById("button_back_img").style.display="none";
							}
						}
					}
					function nextImg() {
						if (currimg<maximg) {
							currimg++;
							showArtImage(currimg);
							//document.getElementById("pk_img_navi_left").style.color="#000000";
							//document.getElementById("pk_img_navi_left").style.cursor="pointer";
							document.getElementById("button_back_img").style.display="inline";
							if (currimg==maximg) {
								//document.getElementById("pk_img_navi_right").style.color="#aaaaaa";
								//document.getElementById("pk_img_navi_right").style.cursor="default";
								document.getElementById("button_next_img").style.display="none";
							}
						}
					}