my treeview is inside customItem, like below:
<eo:CustomItem runat="server" ID="CourseTreeItem" CancelBubble="false">
<div style="PADDING-LEFT: 0px; LINE-HEIGHT: normal">
<eo:TreeView runat="server" id="tvSingleExpand" Width="158px" ControlSkinID="None" Height="550px"
AutoSelectSource="ItemClick" SingleExpandMode="AllLevels" ClientSideOnItemClick="ChangeLesson">
<TopGroup Style-CssText="border-bottom-color:#999999;border-bottom-style:none;border-bottom-width:0px;
border-left-color:#999999;border-left-style:none;border-left-width:0px;
border-right-color:#999999; border-right-style:none;border-right-width:0px;
border-top-color:#999999;border-top-style:none;border-top-width:0px;
color:black;cursor:hand;font-family:Tahoma;font-size:8pt;
padding-bottom:0px;padding-left:0px;padding-right:0px;padding-top:0px;">
</TopGroup>
<LookNodes>
<eo:TreeNode DisabledStyle-CssText="background-color:transparent;border-bottom-style:none;border-left-style:none;border-right-style:none;border-top-style:none;color:Gray;padding-bottom:1px;padding-left:1px;padding-right:1px;padding-top:1px;"
ItemID="_Default" NormalStyle-CssText="PADDING-RIGHT: 1px; PADDING-LEFT: 1px; PADDING-BOTTOM: 1px; COLOR: black; BORDER-TOP-STYLE: none; PADDING-TOP: 1px; BORDER-RIGHT-STYLE: none; BORDER-LEFT-STYLE: none; BACKGROUND-COLOR: transparent; BORDER-BOTTOM-STYLE: none"
SelectedStyle-CssText="background-color:#316ac5;border-bottom-color:#999999;border-bottom-style:solid;border-bottom-width:1px;border-left-color:#999999;border-left-style:solid;border-left-width:1px;border-right-color:#999999;border-right-style:solid;border-right-width:1px;border-top-color:#999999;border-top-style:solid;border-top-width:1px;color:White;padding-bottom:0px;padding-left:0px;padding-right:0px;padding-top:0px;"></eo:TreeNode>
</LookNodes>
</eo:TreeView>
</div>
</eo:CustomItem>
<script langugage="javascript">
function ChangeLesson(e, info)
{
debugger;
menu = info.getItem().getText();
alert(menu);
}
</script>
But the function ChangeLesson don't work when I click the treeview Item. No report error but don't work. Why? Please help me to solve it. Thanks.