Прописываю вот так окна невидно
echo'<link rel="stylesheet" href="windowfiles/dhtmlwindow.css" type="text/css" />';
echo'<script type="text/javascript" src="windowfiles/dhtmlwindow.js">
</script>';
echo'<script type="text/javascript">
var inlinewin=dhtmlwindow.open("broadcastbox", "inline", "This is some inline content. <a href="http://dynamicdrive.com">Dynamic Drive</a>", "#2: Broadcast Title", "width=300px,height=120px,left=150px,top=10px,resize=1,scrolling=0", "recal")
</script>';echo'<link rel="stylesheet" href="windowfiles/dhtmlwindow.css" type="text/css" />';
echo'<script type="text/javascript" src="windowfiles/dhtmlwindow.js">
</script>';
echo'<script type="text/javascript">
var inlinewin=dhtmlwindow.open("broadcastbox", "inline", "This is some inline content. Dynamic Drive</a>", "#2: Broadcast Title", "width=300px,height=120px,left=150px,top=10px,resize=1,scrolling=0", "recal")
</script>';