var map_americas = new Image();
map_americas.src = '/img/map_americas.jpg';

var map_asia = new Image();
map_asia.src = '/img/map_asia.jpg';

var map_europe = new Image();
map_europe.src = '/img/map_emea.jpg';

var map_australia = new Image();
map_australia.src = '/img/map_australia.jpg';

var themap = new Image();
themap.src = '/img/map.jpg';

function showHideRegion(region,action) {
    var map = document.getElementById("map");
    var link = document.getElementById("link_" + region);
    if (action == "show") {
        map.src = eval("map_" + region).src;
        link.className = "hover"
    }
	else if (action == "hide") {
        map.src = themap.src;
        link.className = ""
    }

}