Dropdownlist full text is not visible in ie

Question

Hi,Every one 
Dropdownlist Full text is not Shown in IE.
here is the sample code
<asp:DropDownList ID="ddlRelationship" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddlRelationship_SelectedIndexChanged" width="200">

<asp:ListItem Text="parent relation To child" />
<asp:ListItem Text="Child relation To Parent" />


                            </asp:DropDownList>

any one help me plz...