The following fragment of <http://status.whatwg.org/annotate-web-apps.js> is not supported by Microsoft Internet Explorer 7:
var style = document.createElement("style"); style.type = "text/css"; // required in html4... var styleText = document.createTextNode("\ .TBW, .WIP, .SCS { margin-left:-2em; border-left:.2em solid; padding-left:1.8em; }\ .TBW { border-color:red; }\ .WIP { border-color:orange; }\ .SCS { border-color:green; }\ "); style.appendChild(styleText); The problem is that you cannot append a child to a STYLE element; cf. <http://msdn2.microsoft.com/en-us/library/ms535934.aspx> and <http://msdn2.microsoft.com/en-us/library/ms535898.aspx#>. Internet Explorer uses style sheet objects instead; the code would be similar to document.styleSheets[0].addRule(".TBW", "border-color: red") While it is nonstandard, it would be a good candidate for standardizing because it reflects the logical structure of a style sheet better than a plain text node. Would you like me to make a fix for IE7? Chris