Problem with iframe alignment

Problem with iframe alignment

Hello - I have a page with 2 iframes. The problem I have is that I cannot seem to get the two iframes to align the content the same way.

The first iframe is correctly aligning content to the top, but the second iframe is aligning content to middle (the content being displayed inside the iframe has a smaller height than the first iframe, but the two iframes themselves are set to the same height attribute).

I have tried using height:xx% instead of pixels, but this doesn't alter how the content is displayed. 

Here is the html code:

<iframe name="frameName1" src="<%=core_url%>context_nav1?projcode=<%=projcode%>"  style="width:30%;height:1000px; border-style: none; border-width: initial; float:top"></iframe><iframe name="frameName2" src="<%=proj_url%>" style="width:65%;height:1000px;border-style: none; border-width: initial; float:top"></iframe>