function ShowHideDiv() { //v9.0
  var i,p,v,obj,args=ShowHideDiv.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

function validate_form ( )
{
    valid = true;

    if ( document.prestige.zonaid.selectedIndex == 0 )
    {
        alert ( "Please select a destination." );
        valid = false;
    }


    return valid;
}