function dsp(flg,ch){
    var obj=document.all && document.all(ch) || document.getElementById && document.getElementById(ch);
    if(obj && obj.style){
        if(flg){
            obj.style.display = "block";
        } else {
            obj.style.display = "none";
        }
    }
}

function cClass(i,c){
  if(document.getElementById){
    document.getElementById("topics01").className='none'; 
    document.getElementById("topics02").className='none'; 
    document.getElementById("topics03").className='none'; 
    document.getElementById("topics04").className='none'; 
    document.getElementById(i).className=c; 
  } 
}

function cNews(flg,ch){
    var obj=document.all && document.all(ch) || document.getElementById && document.getElementById(ch);
    if(obj && obj.style){
        if(flg){
			document.getElementById("topics_t").style.display="none"; 
			document.getElementById("youth").style.display="none"; 
			document.getElementById("school").style.display="none"; 
			document.getElementById("media").style.display="none"; 
			obj.style.display = "block";
        }
    }
}