var permTripMenuSelected = ""

function swap(objID,setPerm)
{
    if (typeof setPerm == 'undefined')
        setPerm = false;
    
    if (!(objID==permTripMenuSelected)) {
        var obj = document.getElementById(objID);
        if (obj.src.indexOf('over') > 0)
            obj.src = "graphics/design/Trip/" + objID + ".gif";
        else
            obj.src = "graphics/design/Trip/" + objID + "_over.gif";
    }
    if (setPerm == true)
        permTripMenuSelected = objID;
}