I am trying the example of RadSlider for ASP.NET AJAX - First Look using VS2008 and IE7.
When I put the coding inside the Content, I get a javascript error "object required" as below:
Anyone know how to solve this problem? Thanks in advance for the help.
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:ScriptManager id="ScriptManager" runat="server" />
<script type="text/javascript">
function ZoomImage(sender, eventArgs)
{
var sliderValue = sender.get_value();
var img = $get("img_preview");
var imageHeight = 212;
//Error: object required
img.style.height = sliderValue/150 * imageHeight + "px";
}
</script>
<img src="Images/top.gif" alt="" style="display:block;"/><div style="background:white;float:left;width:412px;height:280px;overflow:auto;"><img id="img_preview" src="Images/pic.gif" alt=""/></div><div style="float:left;background-image:url(Images/SliderBckg.gif);height:280px;background-repeat:no-repeat;width:87px;padding-top:5px;padding-left:31px;">
<telerik:RadSlider ID="zoomSlider" runat="server"
Value="150"
MaximumValue="250"
MinimumValue="50"
OnClientValueChange="ZoomImage"
Orientation="Vertical"
Length="206"
ShowDecreaseHandle="false"
ShowIncreaseHandle="false"
/>
</div>
</
asp:Content>