harthur

function allStyleSheets(doc) {
  var stylesheets = [];
  for(var i = 0; i < doc.styleSheets.length; i++)
    stylesheets = stylesheets.concat(getStyleSheets(doc.styleSheets[i]));
  return stylesheets;
}

function getStyleSheets(stylesheet) {
  if(!stylesheet)
    return []; // Firefox protects against @import statement loops

harthur

function getFont(element) {
  // create canvas in owner doc to get @font-face fonts
  var doc = element.ownerDocument;
  var canvas = doc.createElement("canvas");
  var context = canvas.getContext("2d");
 
  if(!context.measureText)
    return "Text";
 
  var style = doc.defaultView.getComputedStyle(element, null);