function Setinteract(id)
{
    for(i = 1; i <= 2; i++)
    {
        if(i != id)
        {
            document.getElementById("interact"+i).style.display = "none";
	    document.getElementById("interacta"+i).className = "";

        }
        else
        {
            document.getElementById("interact"+i).style.display = "block";
            document.getElementById("interacta"+i).className = "af";

        } 
    }
}

function Setexpert(id)
{
    for(i = 1; i <= 3; i++)
    {
        if(i != id)
        {
            document.getElementById("expert"+i).style.display = "none";
	    document.getElementById("experta"+i).className = "";

        }
        else
        {
            document.getElementById("expert"+i).style.display = "block";
            document.getElementById("experta"+i).className = "af";

        } 
    }
}

function Setknowledge(id)
{
    for(i = 1; i <= 3; i++)
    {
        if(i != id)
        {
            document.getElementById("knowledge"+i).style.display = "none";
	    document.getElementById("knowledgea"+i).className = "";

        }
        else
        {
            document.getElementById("knowledge"+i).style.display = "block";
            document.getElementById("knowledgea"+i).className = "af";

        } 
    }
}