Hi goh6613,
Try this way:
Need to go to HTML view
<%@ Page Language="C#" %>
<%@ Register Namespace="CuteEditor" Assembly="CuteEditor" TagPrefix="CE" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
</script>
<script>
function changeBodyStyle()
{
var editor1 = document.getElementById('<%= Editor1.ClientID%>');
var content = editor1.GetHTML();
var cleanContent=content.replace(/(<body[^\>]*\>)/i, "<body style='background-repeat: no-repeat' background='http://localhost:2341/eTemplate_develop/member/template/xyz.jpg' border='1'> ");
editor1.SetHTML(cleanContent)
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<CE:Editor ID="Editor1" runat="server" EditCompleteDocument="true">
</CE:Editor>
<input id="Button1" type="button" value="button" onclick="changeBodyStyle()" />
</div>
</form>
</body>
</html>
Regards,
Ken