maphilight({ alwaysOn: true }) doesn't work

[schup]

Setting the alwaysOn option on the full map seems to be broken.
It it is set to true none of the areas display - neither initially nor on mouse over.

The problem I believe is in the usage of the mouseover function

if(options.alwaysOn) {
    $(map).find('area[coords]').each(mouseover);
} 

... but mouseover checks for !area_options.alwaysOn

mouseover = function(e) {
  var shape, area_options;
  area_options = options_from_area(this, options);
  if( !area_options.neverOn && !area_options.alwaysOn ) { 

[kemayo]

This I can fix.