function IsScriptEanbled()
  {
    if(navigator.appVersion.charAt(0)>=3){
        return 1;
    }return 0;
  }
  if(IsScriptEanbled()){
    imgOff = new Array();
    imgOff[0] = new Image();
    imgOff[0].src ="../image/navi_001a.gif";
    imgOff[1] = new Image();
    imgOff[1].src ="../image/navi_002a.gif";
    imgOff[2] = new Image();
    imgOff[2].src ="../image/navi_003a.gif";
    imgOff[3] = new Image();
    imgOff[3].src ="../image/navi_004a.gif";
    imgOff[4] = new Image();
    imgOff[4].src ="../image/navi_005a.gif";
    imgOff[5] = new Image();
    imgOff[5].src ="../image/navi_006a.gif";
    imgOff[6] = new Image();
    imgOff[6].src ="../image/navi_007a.gif";
    imgOff[7] = new Image();
    imgOff[7].src ="../image/navi_008a.gif";

    imgOn = new Array();
    imgOn[0] = new Image();
    imgOn[0].src ="../image/navi_001b.gif";
    imgOn[1] = new Image();
    imgOn[1].src ="../image/navi_002b.gif";
    imgOn[2] = new Image();
    imgOn[2].src ="../image/navi_003b.gif";
    imgOn[3] = new Image();
    imgOn[3].src ="../image/navi_004b.gif";
    imgOn[4] = new Image();
    imgOn[4].src ="../image/navi_005b.gif";
    imgOn[5] = new Image();
    imgOn[5].src ="../image/navi_006b.gif";
    imgOn[6] = new Image();
    imgOn[6].src ="../image/navi_007b.gif";
    imgOn[7] = new Image();
    imgOn[7].src ="../image/navi_008b.gif";
  }

  function ImageMouseOver(menuNo)
  {
    if(IsScriptEanbled()){
        if(menuNo == 1){
            document.menun1.src=imgOn[menuNo-1].src;
        }
        else if(menuNo == 2){
            document.menun2.src=imgOn[menuNo-1].src;
        }
        else if(menuNo == 3){
            document.menun3.src=imgOn[menuNo-1].src;
        }
        else if(menuNo == 4){
            document.menun4.src=imgOn[menuNo-1].src;
        }
        else if(menuNo == 5){
            document.menun5.src=imgOn[menuNo-1].src;
        }
        else if(menuNo == 6){
            document.menun6.src=imgOn[menuNo-1].src;
        }
        else if(menuNo == 7){
            document.menun7.src=imgOn[menuNo-1].src;
        }
        else if(menuNo == 8){
            document.menun8.src=imgOn[menuNo-1].src;
        }
    }
  }

  function ImageMouseOut(menuNo)
  {
    if(IsScriptEanbled()){
        if(menuNo == 1){
            document.menun1.src=imgOff[menuNo-1].src;
        }
        else if(menuNo == 2){
            document.menun2.src=imgOff[menuNo-1].src;
        }
        else if(menuNo == 3){
            document.menun3.src=imgOff[menuNo-1].src;
        }
        else if(menuNo == 4){
            document.menun4.src=imgOff[menuNo-1].src;
        }
        else if(menuNo == 5){
            document.menun5.src=imgOff[menuNo-1].src;
        }
        else if(menuNo == 6){
            document.menun6.src=imgOff[menuNo-1].src;
        }
        else if(menuNo == 7){
            document.menun7.src=imgOff[menuNo-1].src;
        }
        else if(menuNo == 8){
            document.menun8.src=imgOff[menuNo-1].src;
        }
    }
  }