var browser=new Browser();function Browser(){var ua,s,i;this.isIE=false;this.isNS=false;this.version=null;ua=navigator.userAgent;s="MSIE";if((i=ua.indexOf(s))>=0){this.isIE=true;this.version=parseFloat(ua.substr(i+s.length));return;};s="Netscape6/";if((i=ua.indexOf(s))>=0){this.isNS=true;this.version=parseFloat(ua.substr(i+s.length));return;};s="Gecko";if((i=ua.indexOf(s))>=0){this.isNS=true;this.version=6.1;return;};};