function showDiv(div)
{
    if(div==1)
    {        
        document.getElementById("sponsor1").style.display = 'block';
        document.getElementById("sponsor2").style.display = 'none';
        document.getElementById("sponsor3").style.display = 'none';
    }
    if(div==2)
    {        
        document.getElementById("sponsor1").style.display = 'none';
        document.getElementById("sponsor2").style.display = 'block';
        document.getElementById("sponsor3").style.display = 'none';
    }
    if(div==3)
    {        
        document.getElementById("sponsor1").style.display = 'none';
        document.getElementById("sponsor2").style.display = 'none';
        document.getElementById("sponsor3").style.display = 'block';
    }
}