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How do I add CSS rules to a document fragment across IE/FF?
var newDom = document.createDocumentFragment();

newDom.appendChild(document.createElement("style"));
newDom.appendChild(document.createElement("div"));

if (newDom.childNodes[0].styleSheet){
    newDom.childNodes[0].styleSheet.cssText = "div{color:red;}";
    alert(newDom.childNodes[1].currentStyle.color);
}else{
    newDom.childNodes[0].appendChild(document.createTextNode("div{color:red;}"));
    alert(window.getComputedStyle(newDom.childNodes[1], null).color);
};

obj.style.cssText = 'something';