/*************************************
ボタンアクション
*************************************/
function MM_nbGroup(event, grpName) { //v6.0

  var i,img,nbArr,args=MM_nbGroup.arguments;

  if (event == "init" && args.length > 2) {

    if ((img = MM_findObj(args[2])) != null && !img.MM_init) {

      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;

      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();

      nbArr[nbArr.length] = img;

      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {

        if (!img.MM_up) img.MM_up = img.src;

        img.src = img.MM_dn = args[i+1];

        nbArr[nbArr.length] = img;

    } }

  } else if (event == "over") {

    document.MM_nbOver = nbArr = new Array();

    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {

      if (!img.MM_up) img.MM_up = img.src;

      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : ((args[i+1])? args[i+1] : img.MM_up);

      nbArr[nbArr.length] = img;

    }

  } else if (event == "out" ) {

    for (i=0; i < document.MM_nbOver.length; i++) {

      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }

  } else if (event == "down") {

    nbArr = document[grpName];

    if (nbArr)

      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }

    document[grpName] = nbArr = new Array();

    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {

      if (!img.MM_up) img.MM_up = img.src;

      img.src = img.MM_dn = (args[i+1])? args[i+1] : img.MM_up;

      nbArr[nbArr.length] = img;

  } }

}
/*************************************
ボタンアクション終了
*************************************/