function zoomBT(file,w,h){ var p=window.open('','preview_window',"width="+(w+50)+",height="+(h+50)+",top=0,left=0,location=0,toolbar=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=1,fullscreen=0"); p.document.write('

'); p.document.write('