How to save a user made HTML page?

var positions = new Array();
function savePositionOfAllDivs() {
 $('div').each( function(){
  $this = $(this);
  id = $this.attr('id');
  position = $this.position();
  left = position.left;
  top = position.top;
  positions[id] = new Array();
  positions[id]['left'] = left;
  positions[id]['top'] = top;
 }
}