function prepare(){

elems = document.getElementsByTagName('area');
for(i = 0; i < elems.length; i++){
	elems[i].onmouseover = function(){
		curId = this.id;
		
		path = 'url(images/maps/map_' + curId + '.gif) 0 0 no-repeat';
		document.getElementById('mapFonInn').style.background = path;
	}
}

}
window.onload = prepare;