document.replaceChild(

​

HTML({lang: "en"},

  HEAD(

    TITLE("Hello, world"),

    STYLE({type: "text/css"},

      CSS("#container",

        {backgroundColor: "#eee"},

        roundedCorners(5)

      )

    )

  ),

​

  BODY(

    DIV({id: "container"},

      "For more details about dom-o, see the source: ",

      A({href: "//github.com/jed/dom-o/blob/master/dom-o.js"}, "View source")

    )

  )

)

​

, document.documentElement)

​

function roundedCorners(radius) {

  return {

    borderRadius       : radius,

    WebkitBorderRadius : radius,

    MozBorderRadius    : radius

  }

}