AddOnLoadFunction("SetupOnClickLocation", "SetupOnClickLocation()");

function SetupOnClickLocation()
{    
    var oAreas = document.getElementsByTagName("area");
    for( var nIdx=0; nIdx < oAreas.length; nIdx++ )
    {
        oAreas[nIdx].onclick = OnClickLocation;
    }
}

function OnClickLocation(evt)
{
    var oArea = GetEventObject(evt);
    if( oArea )
    {
        document.getElementById("region").innerHTML = oArea.alt;
        var oLink = document.getElementById("succursale");
        oLink.href = oLink.href.substring( 0, oLink.href.indexOf("#") + 1 ) + oArea.id;
    }
}