$(document).ready(function() {
    $('#txtHeaderSearch').keyup(function(event) {
        if (event.keyCode == 13) {
            Search();
            return false;
        }

        return true;
    });
});

function Search() {
    var search = $('#txtHeaderSearch').val();

    if (search == null ||
        search.lengh == 0) {
        return false;
    }    
        
    //construct Url and send user to search page.
    window.location = Edentity.ResolveUrl("~/Search-Results.aspx?q=" + escape(search));
}