para los que entendeis de esto:
Quiero insertar una imagen encima de otra pero me da error:
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="WebForm1.aspx.vb" Inherits="WebApplication5.WebForm1"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>WebForm1</title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" content="Visual Basic .NET 7.1">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
<script language="javascript">
function inserta_imagen() {
var lacapa= document.getElementById("capa_principal");
lacapa.innerHTML="<IMG src='invierno.jpg' alt='' style='Z-INDEX: 102; LEFT: 128px; WIDTH: 376px; POSITION: absolute; TOP: 56px; HEIGHT: 192px height='192' width='376'>";
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
</form>
<IMG id="capa_principal" style="Z-INDEX: 101; LEFT: 88px; WIDTH: 640px; POSITION: absolute; TOP: 40px; HEIGHT: 408px"
height="408" alt="" src="Colinas azules.jpg" width="640">
<INPUT style="Z-INDEX: 103; LEFT: 664px; POSITION: absolute; TOP: 8px" type="button" value="Button"
onclick="inserta_imagen()">
</body>
</HTML>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>WebForm1</title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" content="Visual Basic .NET 7.1">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
<script language="javascript">
function inserta_imagen() {
var lacapa= document.getElementById("capa_principal");
lacapa.innerHTML="<IMG src='invierno.jpg' alt='' style='Z-INDEX: 102; LEFT: 128px; WIDTH: 376px; POSITION: absolute; TOP: 56px; HEIGHT: 192px height='192' width='376'>";
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
</form>
<IMG id="capa_principal" style="Z-INDEX: 101; LEFT: 88px; WIDTH: 640px; POSITION: absolute; TOP: 40px; HEIGHT: 408px"
height="408" alt="" src="Colinas azules.jpg" width="640">
<INPUT style="Z-INDEX: 103; LEFT: 664px; POSITION: absolute; TOP: 8px" type="button" value="Button"
onclick="inserta_imagen()">
</body>
</HTML>
Al ejecutar la función me da error desconocido en tiempo de ejecución.
