Image1 = new Image(109,955)
Image1.src = "/images/header.jpg"

Image2 = new Image(109,955)
Image2.src = "/images/headerR1.jpg"

Image3 = new Image(109,955)
Image3.src = "/images/headerR2.jpg" 

function zoomin() {
document.emp.src = Image3.src; return true;
}

function zoomout() {
document.emp.src = Image2.src; return true;
}

function original() {
document.emp.src = Image1.src; return true; 
}