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Oct 7th, 2015
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  1. var injectStyle = function(content, _styleEl) {
  2. var styleEl;
  3.  
  4. if (_styleEl) { // reuse passed element
  5. styleEl = _styleEl;
  6. }
  7. else {
  8. styleEl = document.createElement('style');
  9. styleEl.setAttribute('type', 'text/css');
  10. document.getElementsByTagName('head')[0].appendChild(styleEl);
  11. }
  12.  
  13. if (styleEl.styleSheet) { // old IE
  14. styleEl.styleSheet.cssText = content;
  15. }
  16. else {
  17. if (_styleEl) {
  18. styleEl.removeChild(styleEl.firstChild);
  19. }
  20. styleEl.appendChild( document.createTextNode(content) );
  21. }
  22. return styleEl;
  23. };
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