IE Version Flagging

/** Store "constants" on the window object to flag specific versions of Internet Exploiter. */
(function(win){
    for(var i = 6; i < 10; ++i){
        if(function(v){
            var d       =   document.createElement("div");
            d.innerHTML =   "<!--[if IE "+v+"]><i></i><![endif]-->";
            return d.getElementsByTagName("i").length;
        }(i))

        win["IS_IE"+i]      =   true,
        win["IE_VERSION"]   =   i;
    }
}(window));