/**********************************************
 * タブ切り替え
 *
 * @param bpref
 * @param hpref
 * @param id_max
 * @param selected
 **********************************************/
function seltab(bpref, hpref, id_max, selected) {
  if (! document.getElementById) return;
  for (i = 0; i <= id_max; i++) {
    if (! document.getElementById(bpref + i)) continue;
    if (i == selected) {
      document.getElementById(bpref + i).style.visibility = "visible";
      document.getElementById(bpref + i).style.position = "";
//      document.getElementById(hpref + i).className = "open";
    } else {
      document.getElementById(bpref + i).style.visibility = "hidden";
      document.getElementById(bpref + i).style.position = "absolute";
//      document.getElementById(hpref + i).className = "close";
    }
  }
}


/**********************************************
 * 画像切り替え
 *
 * @param url
 **********************************************/
function imageChange(url) {
	document.getElementById("target").src = url;
}