jmp = new Array();
img = new Array();

jmp[0] = "works/works126BrightClosedHouse.html";
jmp[1] = "works/works125CafeHouse.html";
jmp[2] = "works/works124SmallHouse.html";
jmp[3] = "works/works122Skip_Floor.html";

img[0] = "images/homepage/sy.jpg";
img[1] = "images/homepage/kh.jpg";
img[2] = "images/homepage/tk.jpg";
img[3] = "images/homepage/mh.jpg";
n = Math.floor(Math.random()*jmp.length);
document.write("<a href='"+jmp[n]+"'>");
document.write("<img src='"+img[n]+"' border='0'>");
document.write("</a>");