function getQueryString(){
    var url=window.location;
    return url;
}

function getRequestParameter ( queryString, parameterName ) {
    // Add "=" to the parameter name (i.e. parameterName=value)
    
    var parameterName = parameterName + "=";
    queryString= queryString.toString();
    if ( queryString.length > 0 ) {
        // Find the beginning of the string
        begin = queryString.indexOf ( parameterName );
        // If the parameter name is not found, skip it, otherwise return the value
        if ( begin != -1 ) {
            // Add the length (integer) to the beginning
            begin += parameterName.length;
            // Multiple parameters are separated by the "&" sign
            end = queryString.indexOf ( "&" , begin );
            if ( end == -1 ) {
                end = queryString.length;
            }
            // Return the string
            return unescape ( queryString.substring ( begin, end ) );
        }
        // Return "null" if no parameter has been found
        return "null";
    }
}