// JavaScript Document
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;
}

if (document.images) 
{
   img1 = new Image();
   img2 = new Image();
   img3 = new Image();
   img4 = new Image();
   img5 = new Image();
   img6 = new Image();
   img7 = new Image();
   img1.src = "images/tabs/about-ovr.gif";
   img2.src = "images/tabs/cataracts-ovr.gif";
   img3.src = "images/tabs/glaucoma-ovr.gif";
   img4.src = "images/tabs/other-ovr.gif";
   img5.src = "images/tabs/drt-ovr.gif";
   img6.src = "images/tabs/contact-ovr.gif";
   img7.src = "images/tabs/blog-ovr.gif";
}