In Mozilla Firefox and Google Chrome on a DropDownList of a RadComboBox the list is displayed below the flash, in Internet Explorer it works correctly. Also the same thing happens with RadDatePicker
How can achieve the compatibility with Firefox and Google Chrome
<div>
<telerik:RadComboBox ID="RadComboBox1" AllowCustomText="true" runat="server">
<Items>
<telerik:RadComboBoxItem runat="server" Text="-- Select item --" />
<telerik:RadComboBoxItem runat="server" Text="Item with No Value" />
<telerik:RadComboBoxItem runat="server" Text="Item with Value=1" Value="1" />
<telerik:RadComboBoxItem runat="server" Text="Item with Value=2" Value="2" />
</Items>
</telerik:RadComboBox>
</div>
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,24"
width="1000" height="78">
<param name="movie" value="header_v8.swf?button=1" />
<param name="quality" value="high" />
<param name="menu" value="false" />
<!--[if !IE]> <-->
<object data="header_v8.swf?button=1"
width="1000" height="78" type="application/x-shockwave-flash">
<param name="quality" value="high" />
<param name="menu" value="false" />
<param name="pluginurl" value="http://www.macromedia.com/go/getflashplayer" />
</object>
<!--> <![endif]-->
</object>