var img1_on=new Image();
var img1_off=new Image();
var img2_on=new Image();
var img2_off=new Image();
var img3_on=new Image();
var img3_off=new Image();
var img4_on=new Image();
var img4_off=new Image();
var img5_on=new Image();
var img5_off=new Image();
var img6_on=new Image();
var img6_off=new Image();
var img7_on=new Image();
var img7_off=new Image();
var img8_on=new Image();
var img8_off=new Image();
var img9_on=new Image();
var img9_off=new Image();
var img10_on=new Image();
var img10_off=new Image();
var img11_on=new Image();
var img11_off=new Image();
var img12_on=new Image();
var img12_off=new Image();
var img13_on=new Image();
var img13_off=new Image();
var img14_on=new Image();
var img14_off=new Image();
var img15_on=new Image();
var img15_off=new Image();
var img16_on=new Image();
var img16_off=new Image();
var img17_on=new Image();
var img17_off=new Image();
var img18_on=new Image();
var img18_off=new Image();
var img19_on=new Image();
var img19_off=new Image();
img1_on.src="2011/image/top/next_reikai_on.png";
img1_off.src="2011/image/top/next_reikai_off.png";
img2_on.src="2011/image/top/sub_movement.png";
img2_off.src="2011/image/top/sub_movement_gray.png";
img3_on.src="2011/image/top/sub_seisaku.png";
img3_off.src="2011/image/top/sub_seisaku_gray.png";
img4_on.src="2011/image/top/sub_yumekikin.png";
img4_off.src="2011/image/top/sub_yumekikin_gray.png";
img5_on.src="2011/image/top/sub_wellvoice.png";
img5_off.src="2011/image/top/sub_wellvoice_gray.png";
img6_on.src="2011/image/top/sub_ctb.png";
img6_off.src="2011/image/top/sub_ctb_gray.png";
img7_on.src="2011/image/top/sub_toronkai3.png";
img7_off.src="2011/image/top/sub_toronkai_gray3.png";
img8_on.src="2011/image/top/sub_nyukai_on.jpg";
img8_off.src="2011/image/top/sub_nyukai_gray.jpg";
img9_on.src="2011/image/top/sub_wanpaku.png";
img9_off.src="2011/image/top/sub_wanpaku_gray.png";
img10_on.src="2011/image/top/sub_moeyo2.png";
img10_off.src="2011/image/top/sub_moeyo_gray2.png";
img11_on.src="2011/image/top/sub_academy.png";
img11_off.src="2011/image/top/sub_academy_gray.png";
img12_on.src="2011/image/top/sub_sanjyo.jpg";
img12_off.src="2011/image/top/sub_sanjyo_gray.jpg";
img13_on.src="2011/image/top/sub_odawara.png";
img13_off.src="2011/image/top/sub_odawara_gray.png";
img14_on.src="2011/image/top/sub_member.png";
img14_off.src="2011/image/top/sub_member_gray.png";
img15_on.src="2011/image/top/sub_iinkai.png";
img15_off.src="2011/image/top/sub_iinkai_gray.png";
img16_on.src="2011/image/top/photomo.png";
img16_off.src="2011/image/top/photomo.png";
img17_on.src="2011/image/top/jisin_01-2.png";
img17_off.src="2011/image/top/jisin_01.png";
img18_on.src="2011/image/top/jisin_02-2.png";
img18_off.src="2011/image/top/jisin_02.png";
img19_on.src="2011/image/top/jisin_03-2.png";
img19_off.src="2011/image/top/jisin_03.png";


function rollon(targetimage) {
  if(targetimage=="image1") {
    document.images[targetimage].src=img1_on.src;
  }
  if(targetimage=="image2") {
    document.images[targetimage].src=img2_on.src;
  }
  if(targetimage=="image3") {
    document.images[targetimage].src=img3_on.src;
  }
  if(targetimage=="image4") {
    document.images[targetimage].src=img4_on.src;
  }
  if(targetimage=="image5") {
    document.images[targetimage].src=img5_on.src;
  }
  if(targetimage=="image6") {
    document.images[targetimage].src=img6_on.src;
  }
  if(targetimage=="image7") {
    document.images[targetimage].src=img7_on.src;
  }
  if(targetimage=="image8") {
    document.images[targetimage].src=img8_on.src;
  }
  if(targetimage=="image9") {
    document.images[targetimage].src=img9_on.src;
  }
  if(targetimage=="image10") {
    document.images[targetimage].src=img10_on.src;
  }
  if(targetimage=="image11") {
    document.images[targetimage].src=img11_on.src;
  }
  if(targetimage=="image12") {
    document.images[targetimage].src=img12_on.src;
  }
  if(targetimage=="image13") {
    document.images[targetimage].src=img13_on.src;
  }
  if(targetimage=="image14") {
    document.images[targetimage].src=img14_on.src;
  }
  if(targetimage=="image15") {
    document.images[targetimage].src=img15_on.src;
  }
   if(targetimage=="image16") {
    document.images[targetimage].src=img16_on.src;
  }
   if(targetimage=="image17") {
    document.images[targetimage].src=img17_on.src;
  }
   if(targetimage=="image18") {
    document.images[targetimage].src=img18_on.src;
  }
   if(targetimage=="image19") {
    document.images[targetimage].src=img19_on.src;
  }
 }

function rolloff(targetimage) {
  if(targetimage=="image1") {
    document.images[targetimage].src=img1_off.src;
  }
  if(targetimage=="image2") {
    document.images[targetimage].src=img2_off.src;
  }
  if(targetimage=="image3") {
    document.images[targetimage].src=img3_off.src;
  }
  if(targetimage=="image4") {
    document.images[targetimage].src=img4_off.src;
  }
  if(targetimage=="image5") {
    document.images[targetimage].src=img5_off.src;
  }
  if(targetimage=="image6") {
    document.images[targetimage].src=img6_off.src;
  }
  if(targetimage=="image7") {
    document.images[targetimage].src=img7_off.src;
  }
  if(targetimage=="image8") {
    document.images[targetimage].src=img8_off.src;
  }
  if(targetimage=="image9") {
    document.images[targetimage].src=img9_off.src;
  }
  if(targetimage=="image10") {
    document.images[targetimage].src=img10_off.src;
  }
  if(targetimage=="image11") {
    document.images[targetimage].src=img11_off.src;
  }
  if(targetimage=="image12") {
    document.images[targetimage].src=img12_off.src;
  }
  if(targetimage=="image13") {
    document.images[targetimage].src=img13_off.src;
  }
  if(targetimage=="image14") {
    document.images[targetimage].src=img14_off.src;
  }
  if(targetimage=="image15") {
    document.images[targetimage].src=img15_off.src;
  }
  if(targetimage=="image16") {
    document.images[targetimage].src=img16_off.src;
  }
  if(targetimage=="image17") {
    document.images[targetimage].src=img17_off.src;
  }
  if(targetimage=="image18") {
    document.images[targetimage].src=img18_off.src;
  }
  if(targetimage=="image19") {
    document.images[targetimage].src=img19_off.src;
  }
}