Geogebra applet

Hello! I´m having problems with java applet in my elgg. The problem is that when I paste the html code, the elgg automatically delete this part: 

<applet name="ggbApplet" code="geogebra.GeoGebraApplet" archive="geogebra.jar"        codebase="" width="784" height="463">

And apear a <p> and a </p> at the begining and at the end.

so the applet don´t run... :(

Do you have an idea??