toggleDisplay=function(elm){if(!document.getElementById){return;}var obj=document.getElementById(elm);
if("none"==obj.style.display){obj.style.display="block";}else if("block"==obj.style.display){obj.style.display="none";}}
sfHover=function(){var sfEls=document.getElementById("content_nav").getElementsByTagName("LI");
for(var i=0;i<sfEls.length; i++){sfEls[i].onmouseover=function(){this.className+=" sfhover";}
sfEls[i].onmouseout=function(){this.className=this.className.replace(new RegExp(" sfhover\\b"), "");}}}
