Maxigallery snippet page comes up blank?

[!MaxiGallery? &galleryPictureTpl=`mgGalleryPicture` &js=`mgJs`!]

<script type="text/javascript">
//<![CDATA[
function showPic(url,title,descr,width,height) {
       var img = document.getElementById('maxImage');
       var titleHolder = document.getElementById('maxTitle');
       var descrHolder = document.getElementById('maxDescr');
	   var newImg = new Image();
	   newImg.onLoad = doImage(img,url,width,height);
       if (titleHolder != null) {
               for (var i = 0; i < titleHolder.childNodes.length; i++) {
                       titleHolder.removeChild(titleHolder.childNodes[i]);
               };
               if (title != "") {
                       var node=document.createTextNode(title);
               }
               else {
                       var node=document.createTextNode("");
               }
               titleHolder.appendChild(node);
       }
       if (descrHolder != null) {
               for (var i = 0; i < descrHolder.childNodes.length; i++) {
                       descrHolder.removeChild(descrHolder.childNodes[i]);
               };
               if (descr != "") {
                       var node=document.createTextNode(descr);
               }
               else {
                       var node=document.createTextNode("");
               }
               descrHolder.appendChild(node);
       }
}
 
function doImage(img,url,width,height) {
img.src=url;
}
//]]>
</script>

<div class="picturecontainer">
       <img id="maxImage"
src="[*myimage:phpthumb=`h=300&w=300&zc=1#[+maxigallery.path_to_gal+][+maxigallery.picture.filename+]#1`*]"
alt="[+maxigallery.picture.title:htmlent+]" />
       <p id="maxTitle">[+maxigallery.picture.title:htmlent+]</p>
       <p id="maxDescr">[+maxigallery.picture.descr:htmlent+]</p>
</div>