Image1 = new Image
Image1.src = "../images/home/facebook_myspace.jpg"

Image2 = new Image
Image2.src = "../images/home/facebook_o.jpg"

Image3 = new Image
Image3.src = "../images/home/myspace_o.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; 
}