IE9. , , , .
— , IE8, JavaScript-.
— CSS3: border-radius, RGBA, opacity, . .
— HTML5: , , script style ( DOM), API .
— DOM L2 DOM L3 (
Events).
— SVG.
— DirectX .
— , HTTP.
, , IE document mode — IE9, , :
<meta http-equiv="X-UA-Compatible" content="IE=IE9" /><meta http-equiv="X-UA-Compatible" content="IE=edge" />IE . .