function swapMap(trg)
{
    if (trg == 1) pg = "../images/contact/map.gif";
    //if (trg == 2) pg = "http://maps.google.com/maps?f=q&hl=en&geocode=&q=13.724893,+100.593385&ie=UTF8&ll=13.734383,100.597601&spn=0.010339,0.013733&z=14&iwloc=addr&output=embed&s=AARTsJpYwGrsro7iY5s9bGqqRt0v7E5bEA";
    if (trg == 2) pg = "http://maps.google.com/maps/ms?msa=0&msid=117360671650695826320.00045ba433b8ba07c7f9d&ie=UTF8&ll=13.724283,100.593127&spn=0.00517,0.006866&z=17";
    //document.getElementById('iframe_map').location.href = pg;
    frames['iframe_map'].location.href = pg;
}