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Oct 7th, 2010
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  1. function setCharset ( charset ) {
  2. var metatags = document.getElementsByName('META');
  3. var charsetMetatag = null;
  4. for (i = 0; i < metatags.length; i++ ) {
  5. if ( metatags[i].getAttribute( 'http-equiv' ).toLowerCase() == 'content-type' ) {
  6. charsetMetatag = metatags[i];
  7. break;
  8. }
  9. }
  10. if ( charsetMetatag == null ) {
  11. var metatag = document.createElement('meta');
  12. metatag.setAttribute('http-equiv','Content-Type');
  13. metatag.setAttribute('content','text/html; charset='+charset);
  14.  
  15. if ( document.getElementsByTagName('head').item(0).hasChildNodes() ) {
  16. document.getElementsByTagName('head').item(0).insertBefore ( metatag,
  17. document.getElementsByTagName('head').item(0).childNodes[0] );
  18. }
  19. else document.getElementsByTagName('head').item(0).appendChild( metatag );
  20. }
  21. else {
  22. charsetMetatag.content = 'text/html; charset='+charset;
  23. }
  24. }
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