function a_active(blkid){try{var nl=document.getElementById(blkid).getElementsByTagName('a');var found=-1;var url=document.location.href+'/';var len=0;for (var i=0;i<nl.length;i++){if(url.indexOf(nl[i].href)>=0){if(found==-1 || len<nl[i].href.length){found=i;len=nl[i].href.length;}}}if(found>=0){nl[found].className='current';}}catch(e){}}