var currentControl = 1;
var strWwdLeft = 'wwd_left';
var strWwdTop = 'wwd-top1';

function ShowHide(newControl)
{
    strWwdLeft = 'wwd_left' + newControl;
    strWwdLeftOff = 'wwd_left' + currentControl;
    
    if(currentControl != null)
    {
        if (currentControl == 1)
        {
            document.getElementById(strWwdTop).className='wwd-top_off'; 
            //document.getElementById(currentControl).style.display='none'; 
            document.getElementById(strWwdLeft).className='leftlinksoff';
        }
        else if (newControl == 1)
        {
            document.getElementById('wwd-top1').className='wwd-top';
            document.getElementById(strWwdLeftOff).className='leftlinkson';
        }
        else
        {
            //alert(strWwdLeftOff);
            document.getElementById(strWwdTop).className='wwd-top_off'; 
            document.getElementById(strWwdLeft).className='leftlinksoff';
            document.getElementById(strWwdLeftOff).className='leftlinkson';
       }
    }   
    if(newControl == currentControl)
    {
      document.getElementById(newControl).style.display='block';        
      document.getElementById(currentControl).style.display='block'; 
    }
    else
    {
      document.getElementById(newControl).style.display='block';        
      document.getElementById(currentControl).style.display='none';            
    }
    
    currentControl = newControl;
    strWwdLeft = 'wwd_left';
}