Javascript Functions

helpers.js

//How can I get query string values?
function getParameterByName(name) {
  name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
  var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
    results = regex.exec(location.search);
  return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}

function setCookie(c_name,value,exdays)
{
  var exdate=new Date();
  exdate.setDate(exdate.getDate() + exdays);
  var c_value=escape(value) + ((exdays==null) ? "" : "; expires="+exdate.toUTCString());
  document.cookie=c_name + "=" + c_value;
}

function getCookie(c_name)
{
  var c_value = document.cookie;
  var c_start = c_value.indexOf(" " + c_name + "=");

  if (c_start == -1)
    c_start = c_value.indexOf(c_name + "=");

  if (c_start == -1) {
    c_value = null;
  } else {
    c_start = c_value.indexOf("=", c_start) + 1;
    var c_end = c_value.indexOf(";", c_start);
    if (c_end == -1)
      c_end = c_value.length;
 
    c_value = unescape(c_value.substring(c_start,c_end));
  }
  return c_value;
}