if (document.images) {
homeOn = new Image();
homeOn.src = "images/home_mouse1.gif";
homeOff = new Image();
homeOff.src = "images/home1.gif";

aboutOn = new Image();
aboutOn.src = "images/about_mouse1.gif";
aboutOff = new Image();
aboutOff.src = "images/about1.gif";

servicesOn = new Image();
servicesOn.src = "images/services_mouse1.gif";
servicesOff = new Image();
servicesOff.src = "images/services1.gif";

wireOn = new Image();
wireOn.src = "images/wire_mouse.gif";
wireOff = new Image();
wireOff.src = "images/wire.gif";

sinkerOn = new Image();
sinkerOn.src = "images/sinker_mouse.gif";
sinkerOff = new Image();
sinkerOff.src = "images/sinker.gif";

small_holeOn = new Image();
small_holeOn.src = "images/small_hole_mouse.gif";
small_holeOff = new Image();
small_holeOff.src = "images/small_hole.gif";

qualityOn = new Image();
qualityOn.src = "images/quality_mouse.gif";
qualityOff = new Image();
qualityOff.src = "images/quality.gif";

capabilitiesOn = new Image();
capabilitiesOn.src = "images/capabilities_mouse1.gif";
capabilitiesOff = new Image();
capabilitiesOff.src = "images/capabilities1.gif";

electrodesOn = new Image();
electrodesOn.src = "images/electrodes_mouse1.gif";
electrodesOff = new Image();
electrodesOff.src = "images/electrodes1.gif";

orderOn = new Image();
orderOn.src = "images/order_mouse.gif";
orderOff = new Image();
orderOff.src = "images/order.gif";

contactOn = new Image();
contactOn.src = "images/contact_mouse1.gif";
contactOff = new Image();
contactOff.src = "images/contact1.gif";

contact_formOn = new Image();
contact_formOn.src = "images/contact_form_mouse.gif";
contact_formOff = new Image();
contact_formOff.src = "images/contact_form.gif";
}

function activate(image_name) {
if (document.images) {
document[image_name].src = eval(image_name + "On.src");
}
}
function deactivate(image_name) {
if (document.images) {
document[image_name].src = eval(image_name + "Off.src");
}
}

function validate()
{
complete=true;
var name=document.form.name.value;
var email=document.form.email.value;
var phone=document.form.phone.value;
var marketing=document.form.marketing.value;

if ((name == "") || (name == null))
{
alert ("Please enter your name.");
complete=false;
}
if (((email == "") || (email == null)) || ((email.indexOf("@")==-1) || (email.indexOf(".")==-1))) 
{
alert ("Please enter in a valid e-mail address.");
complete=false;
}
if ((phone == "") || (phone == null))
{
alert ("Please enter your phone number.");
complete=false;
}
if (marketing == "") 
{
alert ("Please tell us how you heard about us.");
complete=false;
}
return complete;
}