function prepareMostPopular(){
 
    document.getElementById('aMostViewed').onclick = function(){
        togglePopularDisplay('MostViewed');
    }
    
    document.getElementById('aMostCommented').onclick = function(){
        togglePopularDisplay('MostCommented');
    }
    
    document.getElementById('aMostEmailed').onclick = function(){
        togglePopularDisplay('MostEmailed');
    }
    
}



function togglePopularDisplay(objname){

    document.getElementById('divMostViewed').style.display = 'none';
    
    document.getElementById('divMostCommented').style.display = 'none';
    
    document.getElementById('divMostEmailed').style.display = 'none';
    
    document.getElementById('liMostViewed').className = 'off';
    
    document.getElementById('liMostCommented').className = 'off';
    
    document.getElementById('liMostEmailed').className = 'off';
    
    
    
    document.getElementById('div' + objname).style.display = 'inline';
    
    document.getElementById('li' + objname).className = 'on';
    
}



addLoadEvent(prepareMostPopular);