Get a single URL parameter by name
/**
* Get a single URL parameter by it's name.
*/
function _get_url_parameter_by_name(name, url)
{
if (!url) {
url = window.location.href;
}
name = name.replace(/[\[\]]/g, "\\$&");
var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"), results = regex.exec(url);
if (!results) {
return null;
}
if (!results[2]) {
return '';
}
return decodeURIComponent(results[2].replace(/\+/g, " "));
}