function ShowPopUp(sName,sUrl,w,h,c)
{
   var s, hwin;

   s = 'width=' + w + ',height=' + h
   if( c.length > 0 )
       s = s + ',' + c;
   if( c.length == 0 )
       sName = 'popUp';

   hwin = window.open(sUrl,sName,s);
   hwin.focus();
}