var s=document.styleSheets[0];
if(s.insertRule){s.insertRule('.round-corners-6px{border-radius:6px;-khtml-border-radius:6px;-moz-border-radius:6px;-webkit-border-radius:6px;}',s.cssRules.length);}
if(s.addRule){s.addRule('.round-corners-6px','border-radius:6px;',s.rules.length);}