the goal is to declare a span with 2 divs in it... how do i do this? this is wrong...

var liHeaderC1 = $('<div/>', {
    class: 'column-1',
    html: 'sitename.com'
});

var liHeaderC2 = $('<div/>', {
    class: 'column-2',
    html: '99'
});

var liHeaderSpan = $('<span/>', {
    class: 'contacts_wrapper',
	html: liHeaderC1 + liHeaderC2
});