Me han sugerido otras posibilidades, con innerHTML, pero esta opción no la conocía... He echado un vistazo al link pero no termino de entenderlo. Aquí te dejo un ejemplo simplificado de mi código... ¿Puedes echarme una mano?
Código :
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Documento sin título</title>
<style type="text/css">
<!--
#video01 {
position:absolute;
width:320px;
height:198px;
z-index:5;
}
#menu01 {
position:absolute;
width:200px;
height:91px;
z-index:3;
left: 535px;
top: 22px;
}
#menu03 {
position:absolute;
width:372px;
height:90px;
z-index:2;
left: 536px;
top: 122px;
}
#video03 {
position:absolute;
width:200px;
height:115px;
z-index:4;
visibility: hidden;
}
-->
</style>
<script type="text/javascript">
<!--
function MM_CheckFlashVersion(reqVerStr,msg){
with(navigator){
var isIE = (appVersion.indexOf("MSIE") != -1 && userAgent.indexOf("Opera") == -1);
var isWin = (appVersion.toLowerCase().indexOf("win") != -1);
if (!isIE || !isWin){
var flashVer = -1;
if (plugins && plugins.length > 0){
var desc = plugins["Shockwave Flash"] ? plugins["Shockwave Flash"].description : "";
desc = plugins["Shockwave Flash 2.0"] ? plugins["Shockwave Flash 2.0"].description : desc;
if (desc == "") flashVer = -1;
else{
var descArr = desc.split(" ");
var tempArrMajor = descArr[2].split(".");
var verMajor = tempArrMajor[0];
var tempArrMinor = (descArr[3] != "") ? descArr[3].split("r") : descArr[4].split("r");
var verMinor = (tempArrMinor[1] > 0) ? tempArrMinor[1] : 0;
flashVer = parseFloat(verMajor + "." + verMinor);
}
}
// WebTV has Flash Player 4 or lower -- too low for video
else if (userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 4.0;
var verArr = reqVerStr.split(",");
var reqVer = parseFloat(verArr[0] + "." + verArr[2]);
if (flashVer < reqVer){
if (confirm(msg))
window.location = "http://www.macromedia.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash";
}
}
}
}
function MM_findObj(n, d) { //v4.01
var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_showHideLayers() { //v6.0
var i,p,v,obj,args=MM_showHideLayers.arguments;
for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
obj.visibility=v; }
}
function MM_callJS(jsStr) { //v2.0
return eval(jsStr)
}
//-->
</script>
</head>
<body onload="MM_CheckFlashVersion('8,0,0,0','El contenido de la página requiere una nueva versión del reproductor Macromedia Flash. Desea descargarlo ahora?');">
<div id="menu01"><a href="javascript:;" onmouseover="MM_callJS('style.cursor=\"hand\"')"><img src="menu-barraprograma-largo2.jpg" width="700" height="87" border="0" onclick="MM_showHideLayers('video01','','show','video03','','hide')" /></a></div>
<div id="video01">
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="510" height="408" id="FLVPlayer">
<param name="movie" value="FLVPlayer_Progressive.swf" />
<param name="salign" value="lt" />
<param name="quality" value="high" />
<param name="scale" value="noscale" />
<param name="FlashVars" value="&MM_ComponentVersion=1&skinName=Corona_Skin_3&streamName=video1&autoPlay=false&autoRewind=false" />
<embed src="FLVPlayer_Progressive.swf" flashvars="&MM_ComponentVersion=1&skinName=Corona_Skin_3&streamName=video1&autoPlay=false&autoRewind=false" quality="high" scale="noscale" width="510" height="408" name="FLVPlayer" salign="LT" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />
</object>
</div>
<div id="menu03"><a href="javascript:;" onmouseover="MM_callJS('style.cursor=\"hand\"')"><img src="menu-barraprograma-largo2bis.jpg" width="700" height="87" border="0" onclick="MM_showHideLayers('video01','','hide','video03','','show')" /></a></div>
<div id="video03">
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="510" height="408" id="FLVPlayer1">
<param name="movie" value="FLVPlayer_Progressive.swf" />
<param name="salign" value="lt" />
<param name="quality" value="high" />
<param name="scale" value="noscale" />
<param name="FlashVars" value="&MM_ComponentVersion=1&skinName=Corona_Skin_3&streamName=video3&autoPlay=false&autoRewind=false" />
<embed src="FLVPlayer_Progressive.swf" flashvars="&MM_ComponentVersion=1&skinName=Corona_Skin_3&streamName=video3&autoPlay=false&autoRewind=false" quality="high" scale="noscale" width="510" height="408" name="FLVPlayer1" salign="LT" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />
</object>
</div>
</body>
</html>