Using both <object> and <embed> will give you a wider breadth of browser compatibility.
<object data="yoursite.com/the.pdf" type="application/pdf" width="750px" height="750px">
<embed src="yoursite.com/the.pdf" type="application/pdf">
<p>This browser does not support PDFs. Please download the PDF to view it: <a href="yoursite.com/the.pdf">Download PDF</a>.</p>
</embed>
</object>
