img1 = new Image();
img1.src ="img/link-mo.gif";
img2 = new Image();
img2.src ="img/top-mo.gif";
img3 = new Image();
img3.src ="img/sort-mo.gif";
img4 = new Image();
img4.src ="img/board-mo.gif";
img5 = new Image();
img5.src ="img/forum-mo.gif";
img6 = new Image();
img6.src ="img/edit-mo.gif";
img7 = new Image();
img7.src ="img/dc-mo.gif";