function Swap(SelectedDiv, control, hdSelected, hdSelectedControl)
{
    
    var previous=document.getElementById(hdSelected).value;
    SelectedDiv.className="tabOnBkgd";
    document.getElementById(SelectedDiv.id+"First").className="ActiveTabLeft";
    document.getElementById(SelectedDiv.id+"Third").className="ActiveTabRight";
    document.getElementById(control).style.display="block";
 
    if((previous!="")&&(previous!=SelectedDiv.id))
    {
        hdSelectedDivObj=document.getElementById(previous);
        hdSelectedDivObj.className="tabOffBkgd";
        document.getElementById(previous+"First").className="InActiveTabLeft";
        document.getElementById(previous+"Third").className="InActiveTabRight";
        document.getElementById(document.getElementById(hdSelectedControl).value).style.display="none";
   }

   document.getElementById(hdSelected).value=SelectedDiv.id;
   document.getElementById(hdSelectedControl).value=control;
}