Checked your code and the reason you are getting the lightbox twice is because it is in your code twice. You need to strip out the second instance- The code looks like:
PHP Code:
</script>
<script type="text/javascript" src="includes/templates/iC_AthemeV1.2/jscript/lightbox_lightningload.js"></script>
<script type="text/javascript" src="includes/templates/iC_AthemeV1.2/jscript/lightbox_prototype.js"></script>
<script type="text/javascript" src="includes/templates/iC_AthemeV1.2/jscript/lightbox_scriptaculous.js?load=effects"></script>
<script language="javascript" type="text/javascript"><!--
var fileLoadingImage = "includes/templates/iC_AthemeV1.2/images/zen_lightbox/loading.gif";
var fileBottomNavCloseImage = "includes/templates/iC_AthemeV1.2/images/zen_lightbox/closelabel.gif";
var overlayOpacity = 0.8;
var overlayDuration = 0.2;
var animate = true;
var resizeSpeed = 7;
var borderSize = 10;
var objOverlay = document.createElement("div");
objOverlay.setAttribute('id','overlay');
objOverlay.style.display = 'none';
var objLightbox = document.createElement("div");
objLightbox.setAttribute('id','lightbox');
objLightbox.style.display = 'none';function hideFlash(){
var flashObjects = document.getElementsByTagName("object");
for (i = 0; i < flashObjects.length; i++) {
flashObjects[i].style.visibility = "hidden";
}
var flashEmbeds = document.getElementsByTagName("embed");
for (i = 0; i < flashEmbeds.length; i++) {
flashEmbeds[i].style.visibility = "hidden";
}
}function showSelectBoxes(){
var selects = document.getElementsByTagName("select");
for (i = 0; i != selects.length; i++) {
selects[i].style.visibility = "visible";
}
flashObjects = document.getElementsByClassName('zenLightboxHideMe')
flashObjects.each(function(object){
Element.show(object);
})
}
function hideSelectBoxes(){
var selects = document.getElementsByTagName("select");
for (i = 0; i != selects.length; i++) {
selects[i].style.visibility = "hidden";
}
flashObjects = document.getElementsByClassName('zenLightboxHideMe')
flashObjects.each(function(object){
Element.hide(object);
})
}
//--></script>
<script type="text/javascript" src="includes/templates/iC_AthemeV1.2/jscript/lightbox.js"></script>
The place to start looking would be in:
includes\modules\pages\product_info