function openWindow(url,width,height,scrollbars) 
{
  var leftoffset = (screen.width - width - 10)/2;
  var topoffset = (screen.height - width - 40)/2;
  window.open(url,'_blank','titlebar=no,resizable=no,scrollbars=' + scrollbars + ',width=' + width + ',height=' + height + ',left=' + leftoffset + ',top=' + topoffset);
}   

function validateSearchBox()
{
  if (document.getElementById('zip').value == '')
  {
    alert('Please enter a zip code.');
    return false;
  }
  else
  {
    if(document.getElementById('zip').value.match(/^(\d{5})$/) == null)
    {
      alert('Invalid zip code. It must have 5 digits.');
      return false;
    }
  }      
  return true;
}

function LTrim( value )
{
  var re = /\s*((\S+\s*)*)/;
  return value.replace(re, "$1");
}

function RTrim( value )
{
  var re = /((\s*\S+)*)\s*/;
  return value.replace(re, "$1");
}

function trim( value )
{
  return LTrim(RTrim(value));
}