function showPopup(target_url, target_obj) {
    this.target = target_obj;

    var obj_window = window.open(target_url, "Lookup", 'width=620,height=500,resizable=yes,top=200,left=200,dependent=yes,alwaysRaised=yes,scrollbars=yes');
    obj_window.opener = window;
    obj_window.focus();
}

function closePopup(val) {
    window.opener.target.value = val;
    window.opener.focus();
    window.close();
}

function swapImage(name, src) {
	document[name].src = src;
}