I have html allowed on my site but want to limit the size of the embeded videos and such, so they wont warp the profile page. How would I go about doing this?

I have this code on my MySpace.....

<style type="text/css">
embed, object {display:block; width:220px;
height:200px;} td.text td.text .orangetext15, td.text td.text table table div {display:none;} ;}</style>

......but need to know how and where to do it php style!