//site search box
jQuery(
    function($) {
        jQuery(document).ready(
            function() {

                var keywordDefault = $(".defaultSearchLabel").val();
                var errorDefault = $(".defaultErrorLabel").val();
                var siteSearchResultsLink = $('.siteSearchResultsLink').val();

                function performSearch() {                    
                    var keyword = $(".siteSearchBox").val();
                    if (keyword != '' && keyword != keywordDefault) {                        
                        var redrectLink = siteSearchResultsLink + '&' + 'qu=' + keyword;                        
                        window.location.replace(redrectLink);
                    }
                    else {
                        alert(errorDefault);
                    }
                }

                //enter key pressed on recipient address.
                $(".siteSearchBox").keyup(
            function(e) {
                if (e.keyCode == 13) {
                    performSearch();
                }
            });

                //site search go button click
                $(".siteSearchButton").click(
                    function() {
                        performSearch();
                        return false;
                    });
            });
    });