É só tu ir configurando aqui pra mexer no posicionamento:

left:0px; top:0px; background-color:#1e1e22; width:100%; height:180%; z-index:100;margin:0px;opacity:0.85;

E pra tirar aquele bug do Fechar, é só mexer no final do script, tenta assim:

<div id="LayerPop" style="display:block; position:absolute; left:0px; top:0px; background-color:#1e1e22; width:100%; height:180%; z-index:100;margin:0px;opacity:0.85;"></div>
<div id="LayerPop2" style="position: absolute; left: 33%; top: 120px; z-index: 5000;"><a href="?subtopic=donate" target="_BLANK"><img src="<a href="<a href="<a href="<a href="http://pt-br.tinypic.com?ref=dzuwzp" target="_blank"><img src="http://i68.tinypic.com/dzuwzp.png" border="0" alt="Image and video hosting by TinyPic"></a>"<class="imgBorder"></a><br>

 

bugo tudo desse jeito kk