Change ValidationSummary Template to add text

Question

Using MVC 4/Razor

@HTML.ValidationSummary(True) generates:

• First Name is required.
• Last Name is required.

@HTML.ValidationSummary(True, "Please fix the following errors:") generates:

Please fix the following errors:

• First Name is required.
• Last Name is required.

I want to be able to default the "Please fix the following errors" so that putting @HTML.ValidationSummary(True) would generate:

Please fix the following errors:

• First Name is required.
• Last Name is required.

Is there anyway to do that? I have this but have no idea where to put it:

 @model ModelStateDictionary
    @using System.Web.Mvc.Html
    @using MvcSiteMapProvider.Web.Html.Models

    <div class='@(Html.ViewData.ModelState.IsValid ? "validation-summary-valid" : "validation-summary-errors") data-valmsg-summary="true">
        <span><strong>Please fix the following errors:</strong></span>
        <ul>
            @foreach (var modelError in Model.SelectMany(keyValuePair => keyValuePair.Value.Errors))
            {
                <li>@modelError.ErrorMessage</li>
            }
        </ul>
    </div>