function(){
		if(this.ieVersion !== undefined) return this.ieVersion;
		var ua=this.headers['user-agent'],m;
		if(!ua || !(m=ua.match(/MSIE ([\d\.]+)/i))) return this.ieVersion=false;
		return this.ieVersion=m[1];
	}
function(){
		if(this.ieVersion !== undefined) return this.ieVersion;
		var ua=this.headers['user-agent'],m;
		if(!ua || !(m=ua.match(/MSIE ([\d\.]+)/i))) return this.ieVersion=false;
		return this.ieVersion=m[1];
	}
function ( ) { if ( this . ieVersion !== undefined ) return this . ieVersion ; var ua = this . headers [ 'user-agent' ] , m ; if ( ! ua || ! ( m = ua . match ( / MSIE ([\d\.]+) / i ) ) ) return this . ieVersion = false ; return this . ieVersion = m [ 1 ] ; }
TODO lang
TODO lang