if(!Compare.equalsIgnoreCase(event.getName(), "PowerPoint Document"))
return;
DocumentInputStream input = event.getStream();
byte[] buffer = new byte[input.available()];
input.read(buffer, 0, input.available());
for(int i=0; i<buffer.length-20; i++) {
long type = LittleEndian.getUShort(buffer,i+2);
long size = LittleEndian.getUInt(buffer,i+4);
if(type==4008L) {