function get_url_param( name )
{
    name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");

    var regexS = "[\\?&]"+name+"=([^&#]*)";
    var regex = new RegExp( regexS );
    var results = regex.exec( window.location.href );

    if ( results == null )
        return "";
    else
        return results[1];
}