Problem of creating object in html file

[lucluv]

I am creating an object of html file in another html file using tag. when i run it in IE6 it works fine and create the object but if run it in IE7 it doesn't crate the object of html file.code that ive used is written below. i've tried it several ways by removing different fields but failed. Pls tell me where is the problem. or(remove type attrib) or(remove type and style atttrib) or.......