function hideDiv(divName)
{
    var dv = document.getElementById(divName);
    if (dv != null)
        dv.style.display = 'none';
}

function doLink(url)
{
    window.location = url;
}

function trim(stringToTrim) 
{
	return stringToTrim.replace(/^\s+|\s+$/g,"");
}

function ltrim(stringToTrim) 
{
	return stringToTrim.replace(/^\s+/,"");
}

function rtrim(stringToTrim)
{
	return stringToTrim.replace(/\s+$/,"");
}

function getQueryVariable(variable) 
{
  var query = window.location.search.substring(1);
  var vars = query.split("&");
  for (var i=0;i<vars.length;i++) 
  {
    var pair = vars[i].split("=");
    if (pair[0] == variable) {
      return pair[1];
    }
  }
  return '';
}