if (document.images) {

 lodgingon = new Image();
 lodgingon.src = "/images/menu_lodging_on.gif";

 lodgingoff = new Image();
 lodgingoff.src = "/images/menu_lodging_off.gif";

 activitieson = new Image();
 activitieson.src = "/images/menu_activities_on.gif";

 activitiesoff = new Image();
 activitiesoff.src = "/images/menu_activities_off.gif";

 diningon = new Image();
 diningon.src = "/images/menu_dining_on.gif";

 diningoff = new Image();
 diningoff.src = "/images/menu_dining_off.gif";

 spaon = new Image();
 spaon.src = "/images/menu_spa_on.gif";

 spaoff = new Image();
 spaoff.src = "/images/menu_spa_off.gif";

 special_eventson = new Image();
 special_eventson.src = "/images/menu_special_events_on.gif";

 special_eventsoff = new Image();
 special_eventsoff.src = "/images/menu_special_events_off.gif";

 meetingson = new Image();
 meetingson.src = "/images/menu_meetings_on.gif";

 meetingsoff = new Image();
 meetingsoff.src = "/images/menu_meetings_off.gif";

}


/*
This function can be used to add unlimited window.onload events.
*/
function addLoadEvent(func) {
    var oldonload = window.onload;
        if (typeof window.onload != 'function') {
            window.onload = func;
        } else {
            window.onload = function() {
            if (oldonload) {
                oldonload();
            }
            func();
        }
    }
}

/*
This function is used to disable the form to help prevent 
double submits.

Usage: 
<form onsubmit="submitAndDisableForm(this);return void;">
*/
function submitAndDisableForm(form)
{
    form.submit();
    var elements = form.elements();
    for(var i=0;i<elements.length;i++) {
        elements[i].disabled=true;
    }
}

/*
This function can be used to disable the "Enter" key for 
stricter control over forms.
Usage:
document.onkeypress = disableEnterKey;
*/
function disableEnterKey(e)
{
     var key;
     if(window.event)
          key = window.event.keyCode;     //IE
     else
          key = e.which;     //firefox

     if(key == 13)
          return false;
     else
          return true;
}