// ---------------------------------------------------------------------
// Function for Dropdown
// ---------------------------------------------------------------------
function dropClick(uid) {

    // maximum ammount of drops expected (always try to exceed this value)
    var maxDrops = 10;
    
    // go through each existing one of them and close all
    for (var d = 1; d <= maxDrops; d++) {
        if (document.getElementById('ulMenu'+d) != null) { document.getElementById('ulMenu'+d).style.display='none'; }
    }
    
    // open the one clicked only
    document.getElementById('ulMenu'+uid).style.display='block';

}