function openHelpOverlay(){$('overlay').style.display='block';$('overlaybody').style.display='block';$("overlay").style.visibility="visible";$("overlaybody").style.visibility="hidden";var myHTMLRequest=new Request.HTML({update:$('overlaybody'),evalScripts:true,onComplete:function(tree,el,html,js){$('overlaybody').style.visibility="visible";}}).get("http://"+window.location.host+"/overlays/help.html");}
function closeOverlay(){$('overlay').style.display='none';$('overlaybody').style.display='none';$("overlay").style.visibility="hidden";$("overlaybody").style.visibility="hidden";}