$(document).ready(function(){
$("img.n_img_az").mouseover(function(){
$(this).css("position","relative");
var div = $('<div id="img_big"></div>');
$(div).css("position","absolute");
$(div).css("left",($(this).offset().left-30));
$(div).css("top",($(this).offset().top-25));
$(div).css("z-index","1000000");
$(this).clone().appendTo(div);
$("img",div).css("border","1px solid gray");
$("img",div).css("width","150px");
$($(this).parent()).append(div);
$(div).mouseout(function(){
$(this).remove();
});
});
});