<!--
img_name=new Array();
img_name[0] = "../images/picture/b2.jpg";
img_name[1] = "../images/picture/b3.jpg";
img_name[2] = "../images/picture/b4.jpg";
img_name2   = "../images/picture/b1.jpg";

img1 = new Array();
img2 = new Image(); img2.src = img_name2;
for(i=0; i<img_name.length; i++)  {
  img1[i] = new Image(); img1[i].src = img_name[i];
}

function mouse_over(which) {
  document.images["swapImg"].src=img1[which].src;
}
function mouse_out(which) {
  document.images["swapImg"].src=img2.src;
}
//-->