if (document.images) {
var img1on =new Image(); img1on.src="/images/main/1_1.gif"
var img1off =new Image(); img1off.src="/images/main/1.gif"
var img2on =new Image(); img2on.src="/images/main/2_2.gif"
var img2off =new Image(); img2off.src="/images/main/2.gif"
var img3on =new Image(); img3on.src="/images/main/3_3.gif"
var img3off =new Image(); img3off.src="/images/main/3.gif"
var img4on =new Image(); img4on.src="/images/main/4_4.gif"
var img4off =new Image(); img4off.src="/images/main/4.gif"

var img5on =new Image(); img5on.src="/images/main2/1_1.gif"
var img5off =new Image(); img5off.src="/images/main2/1.gif"

var img6on =new Image(); img6on.src="/images/main2/2_2.gif"
var img6off =new Image(); img6off.src="/images/main2/2.gif"

var img7on =new Image(); img7on.src="/images/main2/3_3.gif"
var img7off =new Image(); img7off.src="/images/main2/3.gif"


}
function imgOn(imgName) {
if (document.images) {document[imgName].src = eval(imgName + "on.src");}}

function imgOff(imgName) {
if (document.images) {document[imgName].src = eval(imgName + "off.src");}}