If it's a HTML-document (as indicated by the .htm extension) I would consider an iframe:
Code:
<iframe src="xxx.htm" width="850" height="1100" scrolling="no" frameborder="0" style="width:850px; height:1100px; border-width:0px; overflow:hidden">Error: Embedded data could not be displayed.</iframe
This should guarantee a border- and scrollbarless display in all browsers.