ua=navigator.userAgent.toLowerCase();browserSniffer={'ie7':(ua.indexOf('msie 7')>-1&&document.all&&ua.indexOf('netscape')==-1),'ie6':(ua.indexOf('msie 6')>-1&&document.all&&ua.indexOf('netscape')==-1),'ie':(ua.indexOf('msie')>-1&&document.all&&ua.indexOf('netscape')==-1),'nnf':(ua.indexOf('netscape')!=-1&&ua.indexOf('gecko')!=-1),'nni':(ua.indexOf('netscape')!=-1&&ua.indexOf('msie')!=-1),'nn6':(ua.indexOf('netscape')!=-1),'gek':(ua.indexOf('gecko')!=-1),'ff1':(ua.indexOf('firefox')!=-1),'opr':(ua.indexOf('opera')!=-1),'mac':(ua.indexOf('mac')!=-1),'web':(ua.indexOf('webtv')!=-1),'saf':(ua.indexOf('safari')!=-1),'kon':(ua.indexOf('konqueror')!=-1),'chr':(ua.indexOf('chrome')!=-1),'nn4':(document.layers)}