RadComboBox Setting style border using javascript

[JaiChandra Chilumuru]

I am trying to set border style of the RadComboBox control on client side to red on fail of validation. I am using Custom validator control, but the border doesnt seem to change. Can you please review my code and let me know what am I doing?

 <telerik:RadComboBox runat="server" ID="radCbLicenseSt" Width="55px" Height="300px" ></telerik:RadComboBox>
<asp:CustomValidator  ID="cvLicensest" runat="server" ControlToValidate="radCbLicenseSt" ValidateEmptyText="true"  ClientValidationFunction="ReqFieldValidationCBox" CssClass="error" EnableClientScript="true" Display="Dynamic" ValidationGroup="Enrollment" />

function ReqFieldValidationCBox(source, arguments)
{
    var Cbox = $find(source.controltovalidate);
    if (Cbox)
    {
        if (Cbox.get_value() == "")
        {
            Cbox.get_inputDomElement().style.bordercolor = "red";
            Cbox.get_inputDomElement().style.borderwidth = "1px";
            arguments.IsValid = false;
        }
        else
        {
            arguments.IsValid = true;
        }
    }
}

[Shinu]

Hello JaiChandra,

I tried following code in order to set the border for the combobox. Give a try with this.

Client Side Code:

    function ReqFieldValidationCBox(source, arguments) {
        var Cbox = $find(source.controltovalidate);
        if (Cbox) {
            if (Cbox.get_value() == null || Cbox.get_value == "") {
                Cbox._element.style.border = "solid 1px red";
                arguments.IsValid = false;
            }
            else {
                arguments.IsValid = true;
            }
        }
    }

-Shinu.

[JaiChandra Chilumuru]

Thank you. It worked.
Just a minor correction.. I added parenthesis to get_value

if (Cbox.get_value() == null || Cbox.get_value() == "")