/**
  * Shows the region's countries that customer clicks on and  
  * hide the others from the specified "regions" array
  *
  * @var int id  ID of the node within DOM
  */
function showAndHideRegions(id){
    var box     = null;     
    var regions = new Array('region63','region64','region65','region66','region67');
    
    box = document.getElementById(id);
    box.style.display = (box.style.display!='block') ? 'block': 'none';
    
    for (var i = 0; i < regions.length; i++) {
        if (regions[i] != id) {
            box = document.getElementById(regions[i]);
            box.style.display = 'none';            
        }
    }
}