function phb(g1,g2)
{
    for(i=1;i<=g2;i++)
    {
        if(i==g1)
        {
          document.getElementById("phb_content_"+i).style.display="";  
		  document.getElementById("phb_top_"+i).className="phb_2";  
        }
        else
        {
          document.getElementById("phb_content_"+i).style.display="none";
		  document.getElementById("phb_top_"+i).className="phb_1";  
}
    }
}