/* [www.ch-ginga.jp]
 * Scripts for "Sanada Taiheiki"
 * Modified: 2009-04-16
 */

function showthis(obj) {
   if(!obj) return false;
   if(document.getElementById) {
      document.getElementById("item1").style.display = "none";
      document.getElementById("item2").style.display = "none";
	  document.getElementById("item3").style.display = "none";

document.getElementById(obj).style.display = "block";
   } else {
      return false;
   }
}