document.write('<div style="display: none;">');
document.write('<img src="/templates/popnets/images/node-plus-blue.gif" />');
document.write('<img src="/templates/popnets/images/node-loading.gif" />');
document.write('<img src="/templates/popnets/images/node-minus-grey.gif" />');
document.write('<img src="/templates/popnets/images/node-minus-blue.gif" />');
document.write('</div>');