I have been trying to set the disabled button image for the WebDropDown, I had it define it in the aspx page and at the ig_dropDown.css but it dosen't change it always show the default image.

.igdd_DropDownButtonDisabled

{ background-image: url(images/igdd_DropDownButtonDisabled.png); }

<Button DisabledImageUrl="./ig_res/Default/images/igdd_DropDownButtonDisabled.png" />

And debuging in client-side I got the next code:

<DIV id=ctl00_cphFormulario_cboTipoFct class="ig_Disabled igdd_ControlDisabled " name="cboTipoFct"><DIV id=x:647903540.0:mkr:Target mkr="Target">
<DIV style="POSITION: absolute; WIDTH: 147px; DISPLAY: none; HEIGHT: 0px; VISIBILITY: hidden; OVERFLOW: hidden" id=x:647903540.5:mkr:DropDown_animations>
<DIV style="DISPLAY: block; VISIBILITY: visible" id=x:647903540.5:mkr:DropDown class="igdd_DropDownListContainer " mkr="DropDown">
<DIV style="HEIGHT: 200px; OVERFLOW: auto" id=x:647903540.6:mkr:DropDownContents mkr="DropDownContents">
<UL id=x:647903540.7:mkr:List:nw:1 class="igdd_DropDownList " mkr="List" nw="1">
<LI id=x:647903540.8:adr:0 class="igdd_ListItem  igdd_ListItemSelected"><A href="BLOCKED SCRIPTvoid(0)">Importación</A></LI>
<LI id=x:647903540.9:adr:1 class="igdd_ListItem "><A href="BLOCKED SCRIPTvoid(0)">Importación Temportal</A></LI>
<LI id=x:647903540.10:adr:2 class="igdd_ListItem "><A href="BLOCKED SCRIPTvoid(0)">Nacional</A></LI></UL></DIV></DIV></DIV>
<TABLE id=x:647903540.1:mkr:TargetTable class="igdd_ControlArea " cellSpacing=0 cellPadding=0 mkr="TargetTable">
<TBODY>
<TR>
<TD style="WIDTH: 100%"><INPUT accessKey="" id=x:647903540.2:mkr:Input class="ig_Disabled igdd_ValueDisplayDisabled " disabled tabIndex=0 value=Importación readOnly type=text mkr="Input" autocomplete="off"></TD>
<TD style="PADDING-LEFT: 0px; PADDING-RIGHT: 0px" id=x:647903540.3:mkr:Button class="igdd_DropDownButton " mkr="Button"><IMG id=x:647903540.4:mkr:ButtonImage alt="" src="ig_res/Default/images/igdd_DropDownButton.png" mkr="ButtonImage"></TD></TR></TBODY></TABLE></DIV></DIV>

As you can see (Bold Text) the control show the disabled class for text area but for the button it didn't change at all.

Can't I do something about it?