var cssFix = function(){
    var u = navigator.userAgent.toLowerCase(),
    addClass = function(el, val){
    
        if(! el.className) {
            el.className = val;
        } else {
            var newCl = el.className;
            newCl+=(" "+val);
            el.className = newCl;
        }
    },

    is = function(t){return (u.indexOf(t)!=-1)};
    addClass(document.getElementsByTagName('html')[0],[
    (!(/opera|webtv/i.test(u))&&/msie (\d)/.test(u))?('ie ie'+RegExp.$1)
    : is('firefox/2')?'gecko ff2'
    : is('firefox/3')?'gecko ff3'
    : is('gecko/')?'gecko'
    : is('chrome/')?'chrome'
    : is('opera/9')?'opera opera9':/opera (\d)/.test(u)?'opera opera'+RegExp.$1
    : is('konqueror')?'konqueror'
    : is('applewebkit/')?'webkit safari'
    : is('mozilla/')?'gecko':'',
        (is('x11')||is('linux'))?' linux'
    : is('mac')?' mac'
    : is('win')?' win':''
    ].join(" "));
}();