how to make marquee move the whole text

Question

I have tried marquee atg in asp.net to move text and I sized the space for displaying the text which is small and when text reaches the end point starts displaying from the the begging

 I need to show all text continually

 

please help

<marquee  behavior="scroll" direction="up" style="width:auto; height:400px" scrollamount="2" onmouseover="this.stop();" onmouseout="this.start();">
                                <asp:DataList ID="dlIdea" DataSourceID="SqlDataSource2" runat="server"
                                      Width="100%" HorizontalAlign="Left" CellPadding="2">