function noenter() {
  return !(window.event && window.event.keyCode == 13); }


var nav = window.Event ? true : false;

if (nav) {
   window.captureEvents(Event.KEYDOWN);
   window.onkeydown = NetscapeEventHandler_KeyDown;
} else {
   document.onkeydown = MicrosoftEventHandler_KeyDown;
}

function NetscapeEventHandler_KeyDown(e) {
  if (e.which == 13 && e.target.type != 'textarea' && e.target.type != 'submit') { return false; }
  return true;
}

function MicrosoftEventHandler_KeyDown() {
  if (event.keyCode == 13 && event.srcElement.type != 'textarea' && event.srcElement.type != 'submit')
    return false;
  return true;
}


function GrayOut(obj_checkbox)
{
  if(obj_checkbox.checked)
  {
    obj_text.rfp.numpeople.disabled = true;
	obj_text.rfp.start.disabled = true;
	obj_text.rfp.end.disabled = true;
	obj_checkbox.rfp.layout.disabled = true;
	obj_textarea.rfp.audiovisual.disabled = true;
  }
  else
  {
    obj_checkbox.rfp.numpeople.disabled = false; 
	obj_checkbox.rfp.start.disabled = false;
	obj_checkbox.rfp.end.disabled = false;
	obj_checkbox.rfp.layout.disabled = false;
	obj_checkbox.rfp.audiovisual.disabled = false;
  }
}