function checkEnter(event)
	{ 	
		var code = 0;
		
		if (NS4)
			code = event.which;
		else
			code = event.keyCode;
		if (code==13)
			document.forms(0).submit(); 
	}



function showhide(layerID, layerVis) {
  if(document.getElementById)
    layerObj = document.getElementById(layerID);
  else if(document.all)
    layerObj = document.all[layerID];
  else
    layerObj = null;
  if(layerObj)
  {
    visibility = layerObj.style.visibility;
    layerObj.style.visibility = layerVis;
  }
}