/*main_image script*/

function mouseOut() {
document.getElementById('main_image').style.backgroundPosition='0 0';
}
/*each menu script*/
function mOver1() {
document.getElementById('main_image').style.backgroundPosition='0 0';
}
function mOver2() {
document.getElementById('main_image').style.backgroundPosition='0 -256px';
}
function mOver3() {
document.getElementById('main_image').style.backgroundPosition='0 -512px';
}
function mOver4() {
document.getElementById('main_image').style.backgroundPosition='0 -768px';
} 
function mOver5() {
document.getElementById('main_image').style.backgroundPosition='0 -1024px';
}