function shiftSubDiv(n)
{
  var el = document.getElementById('subDiv'+n);
 
  if ( el.style.display == 'none' )
    el.style.display = 'block'
  else
    if ( el.style.display == 'block' )
    el.style.display = 'none';
};
function checkPhoneNmbr(inputS)
  {
    var sample = '0123456789';
    var outputS = '';
    var c;
 
    for ( i=0; i<inputS.length; i++ ) 
    { 
      c = inputS.substr(i,1); 
 
      if ( sample.indexOf(c)>=0 )
        outputS = outputS + c;
    };
 
    return(outputS);
  };