__MAP_DOM_ID__ = "map-mo";
__MAP_DISTRICT_DOM_HEAD__ = "district-content-";
__MAP_HEIGHT__ = 106;

// activate the district on the map
function actDistrict(a) {
	var m = document.getElementById(__MAP_DOM_ID__);
	var p = (a-1) * __MAP_HEIGHT__;
	p = 0;
	// reposition the map image to highlight the proper district
	m.style.backgroundPosition = (p > 0) ? "0 -"+p+"px" : "0 0";
	
	// display the district's info
	actDistrictInfo(a);
}

// shows selected district info
function actDistrictInfo(a) {
	// hilight selected
	YAHOO.util.Dom.addClass(__MAP_DISTRICT_DOM_HEAD__ + a, 'attention'); 
}

// clears district info
function deactDistrict(a) {
	var m = document.getElementById(__MAP_DOM_ID__);
	m.style.backgroundPosition = "0 0";
	
	YAHOO.util.Dom.removeClass(__MAP_DISTRICT_DOM_HEAD__ + a, 'attention'); 
}