+ "<a class='GBicon logo rollover' href='" + this.logoURL + "'> </a>"
+ " <button class='GBicon rollover zoom_out' onclick='gb.zoom1up(-1); return false;'/>"
+ "<button class='GBicon rollover zoom_in' onclick='gb.zoom1up(1); return false;'/>"
- + " <span class='label'>Zoom: <span id='GBzoom'>25</span>%</span>"
+ + " <span class='label'>Zoom: <span id='GBzoom'>"+100/this.reduce+"</span>%</span>"
+ " <button class='GBicon rollover one_page_mode' onclick='gb.switchMode(1); return false;'/>"
+ " <button class='GBicon rollover two_page_mode' onclick='gb.switchMode(2); return false;'/>"
+ " <a class='GBblack title' href='"+this.bookUrl+"' target='_blank'>"+this.shortTitle(50)+"</a>"