<script>
    (function () {
        try {
            // store the original function in a variable
            var originalClick = Telerik.Web.UI.GridSelection.prototype._click;

            // override the original function
            Telerik.Web.UI.GridSelection.prototype._click = function (e) {
                var el = (e.target) ? e.target : e.srcElement;

                // if autocompletebox do not trigger the RowClick
                if (el.classList.contains('racTokenList') || el.classList.contains('RadAutoCompleteBox')) { return; }

                // Call the original function
                originalClick.call(this, e);
            }
        } catch (e) {
            // oh no, the Telerik.Web.UI.GridSelection is not defined.
        }
    })();
</script>