parser.js

<script>
	jQuery(document).ready(function($){
		var _GET = location.search.substring(1).split("&");

		function parseGetParam(getParam) {
			var $_GET = {};

			for (var i = 0; i < getParam.length; i++) {
				var getVar = getParam[i].split("=");
				$_GET[getVar[0]] = typeof(getVar[1]) == "undefined" ? "" : getVar[1];
			}

			return $_GET['user'];
		}
		if (_GET != '' && _GET != 'undefined')
		{
			var username = parseGetParam(_GET);
			$('.button-slider').attr('href', 'https://www.life-media.ag/index.php?id=2&user=' + username);
			$('.role-button').attr('href', 'https://www.life-media.ag/index.php?id=2&user=' + username);
		}
	})
</script>