rem: document.styleSheets[0].insertRule("book {margin-left:12em;}", 0); 
add:     document.styleSheets[0].cssRules[0].style.marginLeft = "12em"; 
context: function createToc(){  if (document.getElementsByTagName("toc").length == 0) {    var toc = document.createElement("toc");    var title = document.createElement("title");    title.appendChild(document.createTextNode("Table of Contents"));    toc.appendChild(title);      addToToc(document.documentElement, toc);    document.styleSheets[0].insertRule("book {margin-left:12em;}", 0);    document.documentElement.appendChild(toc);  }}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/0bd714d557f0e7954d2413dc0e753d1fe52ded46/toc.js/clean/content/xml/tests/toc/toc.js