function move_in(img_name,img_src) {
document[img_name].src=img_src;
}
function move_out(img_name,img_src) {
document[img_name].src=img_src;
}
image1 = new Image();
image1.src = "images/interface/eng_over.gif";
image2 = new Image();
image2.src = "images/interface/geo_over.gif";